Azabicyclo compound and salt thereof

ABSTRACT

It is intended to provide a novel azabicyclo compound which exhibits both HSP90 inhibitory activity and cell proliferation inhibitory effect. Specifically disclosed is a compound represented by the following general formula (I) or a salt thereof: wherein X 1  represents CH or N; any one of X 2 , X 3  and X 4  represents N, and the others represent CH; any one or two of Y 1 , Y 2 , Y 3  and Y 4  represent C—R 4 , and the others are the same or different and represent CH or N; R 1  represents an optionally substituted monocyclic or bicyclic unsaturated heterocyclic group having 1 to 4 heteroatoms selected from N, S and O; R 2  represents an alkyl group having 1 to 6 carbon atoms, or the like; and R 3  and R 4  represent —CO—R 5  or the like.

FIELD OF THE INVENTION

The present invention relates to an azabicyclo compound or a saltthereof and a pharmaceutical composition containing the same,particularly, a preventive and/or therapeutic agent for cancer, etc.,based on HSP90 inhibitory activity.

BACKGROUND OF THE INVENTION

A group of proteins called molecular chaperons is a multifunctionalprotein, which promotes the formation of the functional structures ofother proteins or maintains these structures, promotes correctassociation, inhibits unnecessary aggregation, protects other proteinsfrom degradation, and promotes secretion (Non-Patent Document 1). HSP90is a molecular chaperon as abundant as approximately 1 to 2% of allintracellular soluble proteins and is however unnecessary for thebiosynthesis of the majority of polypeptides, unlike other chaperonproteins (Non-Patent Document 1). Signaling-related factors (e.g.,ERBB1/EGFR, ERBB2/HER2, MET, IGF1R, KDR/VEGFR, FLT3, ZAP70, KIT,CHUK/IKK, BRAF, RAF1, SRC and AKT), cell cycle regulators (e.g., CDK4,CDK6, Cyclin D, PLK1 and BIRC5), and transcriptional regulators (e.g.,HIF-1α, p53, androgen receptor, estrogen receptor and progesteronereceptor) are known as the main client proteins whose structureformation or stability is regulated by HSP90 through the interactiontherebetween (Non-Patent Documents 2 and 3). HSP90 is deeply involved incell proliferation or survival by maintaining the normal functions ofthese proteins. Furthermore, HSP90 is required for the normal functionsof mutated or chimeric factors (e.g., BCR-ABL and NPM-ALK) which causecarcinogenesis or exacerbation of cancer. This indicates the importanceof HSP90 particularly for processes such as carcinogenesis, cancersurvival, growth, exacerbation and metastasis (Non-Patent Document 2).

The inhibition of the chaperon functions of HSP90 by specific inhibitorssuch as geldanamycin causes the inactivation, destabilization anddegradation of the client proteins, resulting in induction of a halt incell proliferation or apoptosis (Non-Patent Document 4). In terms of thephysiological functions of HSP90, HSP90 inhibitors are characterized inthat they can simultaneously inhibit a plurality of signaling pathwaysinvolved in cancer survival/growth. Thus, the HSP90 inhibitors can serveas drugs having extensive and effective anticancer activity. Moreover,from the findings that cancer cell-derived HSP90 has higher activity andhigher affinity for ATP or inhibitors than those of normal cell-derivedHSP90, it has been expected that the HSP90 inhibitors would serve asdrugs having high cancer selectivity (Non-Patent Document 5). Currently,the clinical development of a plurality of HSP90 inhibitors asanticancer agents is ongoing. The most advancing geldanamycin derivative17-allylamino-17-demethoxygeldanamycin (17-AAG) is under development assingle agents as well as under test on the combined use with variousanticancer agents (Non-Patent Documents 3 and 4). However, the problemsof 17-AAG, such as poor solubility, instability in solutions, low oralabsorption and liver toxicity, have also been pointed out (Non-PatentDocuments 4 and 5). Thus, a new type of HSP90 inhibitor has beendesired. It has also been reported that HSP90 inhibitors not only haveanticancer activity but also can serve as therapeutic agents forautoimmune disease, inflammatory disease, central nervous system disease(e.g., Parkinson's disease, Alzheimer's disease, and Huntington'sdisease), viral infections, cardiovascular disease, etc. (Non-PatentDocuments 2 and 6).

PRIOR ART DOCUMENTS Patent Document

-   Patent Document 1: International Publication No. WO2007035620-   Patent Document 2: International Publication No. WO2008024978

Non-Patent Document

-   Non-Patent Document 1: Nature Reviews Cancer 5, 761-772 (2005)-   Non-Patent Document 2: TRENDS in Molecular Medicine 6, 283-290    (2007)-   Non-Patent Document 3: Clin Can Res 15, 9-14 (2009)-   Non-Patent Document 4: Current Opinion in Pharmacology 8, 370-374    (2008)-   Non-Patent Document 5: Drug Resistance Updates 12, 17-27 (2009)-   Non-Patent Document 6: BMC Neuroscience 9 (Suppl 2), 2008

SUMMARY OF THE INVENTION Problems to be solved by the Invention

An object of the present invention is to provide a novel azabicyclocompound which has both HSP90 inhibitory activity and cell proliferationinhibitory effect. Another object of the present invention is to providea pharmaceutical product which is useful for the prevention and/ortreatment of disease involving the HSP90, particularly, cancer, based onthe HSP90 inhibitory activity.

Means for Solving the Problems

The present inventors have intensively studied various compounds havingHSP90 inhibitory activity and consequently completed the presentinvention by finding that a novel compound represented by the generalformula (I) shown below, which has an unsaturated heterocyclic group atposition 4 (R¹ in the general formula (I)) of the azabicyclo compound,exhibits exceedingly excellent inhibitory activity against HSP90 andfurther exhibits excellent cell proliferation inhibitory effect oncancer cell lines.

Specifically, the present invention provides a compound represented bythe following general formula (I), or a salt thereof:

wherein X¹ represents CH or N;

any one of X², X³ and X⁴ represents N, and the others represent CH;

any one or two of Y¹, Y², Y³ and Y⁴ represent C—R⁴, and the others arethe same or different and represent CH or N;

R¹ represents an optionally substituted monocyclic or bicyclicunsaturated heterocyclic group having 1 to 4 heteroatoms selected fromN, S and O;

R² represents a hydrogen atom, an optionally substituted alkyl grouphaving 1 to 6 carbon atoms or an optionally substituted alkenyl grouphaving 2 to 6 carbon atoms;

R³ represents a cyano group or —CO—R⁵;

R⁴(s) are the same or different and represent a hydrogen atom, a halogenatom, a cyano group, an optionally substitued alkyl group having 1 to 6carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an alkoxygroup having 1 to 6 carbon atoms, an aromatic hydrocarbon group,—N(R⁶)(R⁷), —S—R⁸ or —CO—R⁹;

R⁵ represents a hydroxyl group, an amino group optionally having ahydroxyl group, or an optionally substituted mono- or di-alkylaminogroup;

R⁶ and R⁷ are the same or different and represent a hydrogen atom, anoptionally substituted alkyl group having 1 to 6 carbon atoms, ahalogenoalkyl group having 1 to 6 carbon atoms, an optionallysubstituted cycloalkyl group having 3 to 7 carbon atoms, an optionallysubstituted aralkyl group, an optionally substituted aromatichydrocarbon group, an optionally substituted saturated heterocyclicgroup or an optionally substituted unsaturated heterocyclic group, or R⁶and R⁷ optionally form a saturated heterocyclic group, together with thenitrogen atom to which they are bonded;

R⁸ represents an optionally substituted cycloalkyl group having 3 to 7carbon atoms, or an optionally substituted aromatic hydrocarbon group;and

R⁹ represents a hydrogen atom, a hydroxyl group, an amino groupoptionally having a hydroxyl group, or an optionally substituted mono-or di-alkylamino group.

The present invention also provides a pharmaceutical product containingthe compound represented by the general formula (I), or the saltthereof.

Moreover, the present invention provides a pharmaceutical compositioncontaining the compound represented by the general formula (I), or thesalt thereof and a pharmaceutically acceptable carrier.

Moreover, the present invention provides the compound represented by thegeneral formula (I), or the salt thereof, for used in the treatment ofcancer.

Furthermore, the present invention provides a method for treatingcancer, including administering an effective amount of the compoundrepresented by the general formula (I), or the salts thereof.

Effects of the Invention

The present invention provides a novel compound represented by thegeneral formula (I), or a salt thereof which is useful as an HSP90inhibitor.

The compound of the present invention, or the salt thereof, has beenshown to exhibit excellent HSP90 inhibitory activity and exhibitproliferation inhibitory effect on cancer cell lines. Thus, the compoundof the present invention, or the salt thereof, is useful as a preventiveand/or therapeutic agent for disease involving HSP90, for example,cancer, based on its excellent HSP90 inhibitory activity.

DETAILED DESCRIPTION OF THE INVENTION

A compound of the present invention represented by the general formula(I) is an azabicyclo compound characterized by having an unsaturatedheterocyclic group, such as azaindole or azaindazole, at position 4 ofthe skeleton, and is a novel compound which is not described in any ofthe Documents in Citation List, etc.

In the present specification, examples of “substituents” include ahalogen atom, a hydroxyl group, a cyano group, a nitro group, an alkylgroup, a halogenoalkyl group, a cycloalkyl group, a cycloalkyl-alkylgroup, an aralkyl group, a hydroxyalkyl group, an alkenyl group, analkynyl group, an alkoxy group, a halogenoalkoxy group, an alkoxy-alkylgroup, a cycloalkoxy group, a cycloalkyl-alkoxy group, an aralkyloxygroup, an aralkyloxy-alkyl group, an alkylthio group, acycloalkyl-alkylthio group, an amino group, a mono- or dialkylaminogroup, a cycloalkyl-alkylamino group, an acyl group, an acyloxy group,an oxo group, a carboxyl group, an alkoxycarbonyl group, anaralkyloxycarbonyl group, a carbamoyl group, a saturated or unsaturatedheterocyclic group, an aromatic hydrocarbon group and a saturatedheterocyclic oxy group. The number of the substituents, if any, istypically 1 to 3.

Examples of the halogen atom included in the substituents includechlorine, bromine, fluorine and iodine atoms.

The alkyl or halogenoalkyl group included in the substituents preferablyrefers to a linear or branched alkyl group having 1 to 6 carbon atoms,or a group in which one or all hydrogen atoms in such an alkyl group aresubstituted by the halogen atom exemplified above. Examples thereofinclude: alkyl groups such as methyl, ethyl, n-propyl, isopropyl,n-butyl, isobutyl, sec-butyl, tert-butyl, pentyl and hexyl groups; andhalogenoalkyl groups such as a trifluoromethyl group.

The cycloalkyl group included in the substituents is preferably acycloalkyl group having 3 to 7 carbon atoms. Examples thereof includecyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl and cycloheptyl groups.

The cycloalkyl-alkyl group included in the substituents is preferably analkyl group having 1 to 6 carbon atoms which is substituted bycycloalkyl having 3 to 7 carbon atoms. Examples thereof includecyclopropylmethyl, cyclopropylethyl, cyclobutylmethyl, cyclopentylmethyland cyclohexylmethyl groups.

The aralkyl group included in the substituents preferably refers to alinear or branched alkyl group having 1 to 6 carbon atoms which issubstituted by an aromatic hydrocarbon group having 6 to 14 carbonatoms. Examples thereof include benzyl, phenylethyl, phenylpropyl,naphthylmethyl and naphthylethyl groups.

The hydroxyalkyl group included in the substituents preferably refers tothe linear or branched alkyl group having 1 to 6 carbon atomsexemplified above which has a hydroxy group. Examples thereof includehydroxymethyl and hydroxyethyl groups.

The alkenyl group included in the substituents preferably refers to analkenyl group having 2 to 6 carbon atoms which contains a carbon-carbondouble bond. Examples thereof include vinyl, allyl, methylvinyl,propenyl, butenyl, pentenyl and hexenyl groups.

The alkynyl group included in the substituents preferably refers to analkynyl group having 2 to 6 carbon atoms which contains a carbon-carbontriple bond. Examples thereof include ethynyl and propargyl groups.

The alkoxy or halogenoalkoxy group included in the substituentspreferably refers to a linear or branched alkoxy group having 1 to 6carbon atoms, or a group in which such an alkoxy group is substituted bythe halogen atom exemplified above. Examples thereof include methoxy,ethoxy, n-propoxy, isopropoxy, 1-methylpropoxy, n-butoxy, isobutoxy,tert-butoxy, 2-methyl-butoxy, neopentyloxy, pentan-2-yloxy,fluoromethoxy, difluoromethoxy, trifluoromethoxy, 1,1-difluoroethoxy,2,2-difluoroethoxy, 2,2,2-trifluoroethoxy, 1,1,2,2-tetrafluoroethoxy,perfluoroethoxy, 3-fluoro-2-(fluoromethyl)-propoxy,1,3-difluoropropan-2-yloxy and 2,2,3,3,3-pentafluoro-1-propoxy groups.

The cycloalkoxy group included in the substituents is preferably acycloalkoxy group having 3 to 7 carbon atoms. Examples thereof includecyclopropoxy, cyclobutoxy, cyclopentyloxy, cyclohexyloxy andcycloheptyloxy groups.

The alkoxy-alkyl group included in the substituents preferably refers tothe alkyl group having 1 to 6 carbon atoms exemplified above which issubstituted by the linear or branched alkoxy group having 1 to 6 carbonatoms exemplified above. Examples thereof include methoxymethyl andethoxymethyl groups.

The cycloalkyl-alkoxy group included in the substituents is preferablyan alkoxy group having 1 to 6 carbon atoms which is substituted bycycloalkyl having 3 to 7 carbon atoms. Examples thereof includecyclopropylmethoxy, cyclopropylethoxy, cyclobutylmethoxy,cyclopentylmethoxy and cyclohexylmethoxy groups.

The aralkyloxy group included in the substituents preferably refers toan oxy group which has the aralkyl group exemplified above. Examplesthereof include benzyloxy, phenethyloxy, phenylpropyloxy,naphthylmethyloxy and naphthylethyloxy groups.

The aralkyloxy-alkyl group included in the substituents preferablyrefers to the linear or branched alkyl group having 1 to 6 carbon atomsexemplified above which has the aralkyloxy group exemplified above.Examples thereof include benzyloxymethyl and benzyloxyethyl groups.

The alkylthio group included in the substituents is preferably a (C1-C6)alkylthio group which refers to a linear or branched alkylthio grouphaving 1 to 6 carbon atoms. Examples thereof include methylthio,ethylthio, n-propylthio, isopropylthio, n-butylthio, isobutylthio,sec-butylthio, tert-butylthio, pentylthio and hexylthio groups.

The cycloalkyl-alkylthio group included in the substituents ispreferably an alkylthio group having 1 to 6 carbon atoms which issubstituted by cycloalkyl having 3 to 7 carbon atoms. Examples thereofinclude cyclopropylmethylthio, cyclopropylethylthio,cyclobutylmethylthio, cyclopentylmethylthio and cyclohexylmethylthiogroups.

The mono- or dialkylamino group included in the substituents is a mono-or di-(C1-C6 alkyl)amino group which refers to an amino group which ismonosubstituted or disubstituted by the linear or branched alkyl grouphaving 1 to 6 carbon atoms exemplified above. Examples thereof includemethylamino, dimethylamino, ethylamino, diethylamino andmethylethylamino groups.

The cycloalkyl-alkylamino group included in the substituents refers toan alkylamino group which is substituted by the cycloalkyl groupexemplified above. Examples thereof include cyclopropylmethylamino,cyclobutylmethylamino and cyclopentylmethylamino groups.

Examples of the acyl group included in the substituents include: linearor branched acyl groups having 1 to 6 carbon atoms, such as formyl,acetyl, propionyl, n-butyryl, isobutyryl, valeryl, isovaleryl andpivaloyl groups; and a benzoyl group.

Examples of the acyloxy group included in the substituents include:linear or branched acyloxy groups having 1 to 6 carbon atoms, such asformyloxy, acetoxy, propionyloxy, n-butyryloxy, isobutyryloxy,valeryloxy, isovaleryloxy and pivaloyloxy groups; a benzoyloxy group;and amino acid-derived acyloxy groups such as glycyloxy, alanyloxy andleucyloxy groups.

The alkoxycarbonyl group included in the substituents refers to acarbonyl group which is substituted by the alkoxy group exemplifiedabove. Examples thereof include methoxycarbonyl, ethoxycarbonyl,n-propoxycarbonyl, isopropoxycarbonyl, 1-methylpropoxycarbonyl,n-butoxycarbonyl, isobutoxycarbonyl, tert-butoxycarbonyl,2-methyl-butoxycarbonyl, neopentyloxycarbonyl and pentan-2-yloxycarbonylgroups.

The aralkyloxycarbonyl group included in the substituents preferablyrefers to a carbonyl group which is substituted by the aralkyloxy groupexemplified above. Examples thereof include benzyloxycarbonyl,phenethyloxycarbonyl, phenylpropyloxycarbonyl, naphthylmethyloxycarbonyland naphthylethyloxycarbonyl groups.

Examples of the carbamoyl group included in the substituents include—CONH₂, (mono- or dialkyl)carbamoyl, (mono- or diaryl)carbamoyl,(N-alkyl-N-aryl)carbamoyl, pyrrolidinocarbamoyl, piperidinocarbamoyl,piperazinocarbamoyl and morpholinocarbamoyl groups.

The saturated or unsaturated heterocyclic group included in thesubstituents refers to a monocyclic or bicyclic saturated or 5- to10-membered unsaturated heterocyclic group preferably having 1 to 4 ofany heteroatom of N, S and O. Examples thereof include pyrrolidinyl,piperidinyl, piperazinyl, hexamethyleneimino, morpholino,thiomorpholino, homopiperazinyl, tetrahydrofuranyl, tetrahydropyranyl,imidazolyl, thienyl, furyl, pyrrolyl, oxazolyl, isoxazolyl, thiazolyl,isothiazolyl, pyrazolyl, triazolyl, tetrazolyl, pyridyl, pyrazyl,pyrimidinyl, pyridazinyl, indolyl, isoindolyl, indazolyl,methylenedioxyphenyl, ethylenedioxyphenyl, benzofuranyl,dihydrobenzofuranyl, benzoimidazolyl, benzoxazolyl, benzothiazolyl,purinyl, quinolyl, isoquinolyl, quinazolinyl and quinoxalyl groups.

The aromatic hydrocarbon group included in the substituents preferablyrefers to an aromatic hydrocarbon group having 6 to 14 carbon atoms.Examples thereof include phenyl and naphthyl groups.

The saturated heterocyclic oxy group included in the substituents refersto a monocyclic 5- to 7-membered saturated heterocyclic group having oneor two of any heteroatom of N, S and O, for example, an oxy group whichhas a pyrrolidinyl, piperidinyl, piperazinyl, hexamethyleneimino,morpholino, thiomorpholino, homopiperazinyl group or the like. Examplesthereof include tetrahydrofuranyloxy and tetrahydropyranyloxy groups.

In the general formula (I), X¹ represents CH or N. Moreover, in thegeneral formula (I), any one of X², X³ and X⁴ represents N, and theothers represent CH. Based on these definitions of X¹ to X⁴, examples ofthe azabicyclo skeleton in the general formula (I) include the followingstructures:

wherein R¹ and R² are as defined above.

Of these skeletons, (A-3) and (A-6) are particularly preferable.

In the general formula (I), the “monocyclic or bicyclic unsaturatedheterocyclic group having 1 to 4 heteroatoms selected from N, S and O”in the “optionally substituted monocyclic or bicyclic unsaturatedheterocyclic group having 1 to 4 heteroatoms selected from N, S and O”,represented by R¹ is preferably a monocyclic or bicyclic 5- to10-membered unsaturated heterocyclic group having 1 to 3 heteroatomsselected from N, S and O, more preferably a monocyclic 5- to 6-memberedunsaturated heterocyclic group having 1 to 3 heteroatoms selected fromN, S and O, or a bicyclic 9- to 10-membered unsaturated heterocyclicgroup having 1 to 3 heteroatoms selected from N, S and O. Theheterocyclic group is preferably a group having imidazole, pyrazole,thiophene, furan, pyrrole, oxazole, isoxazole, thiazole, isothiazole,triazole, tetrazole, pyridine, pyrazine, pyrimidine, pyridazine, indole,isoindole, pyrrolopyridine, indazole, methylenedioxyphenyl,ethylenedioxyphenyl, benzofuran, dihydrobenzofuran, benzimidazole,benzoxazole, benzothiazole, purine, quinoline, tetrahydroquinoline,isoquinoline, quinazoline or quinoxaline, more preferably a group havingimidazole, pyrazole, thiophene, furan, pyridine, indole,pyrrolopyridine, benzofuran, quinoline or tetrahydroquinoline,particularly preferably a group having imidazole, pyridine or quinoline.

Specific examples thereof include 1H-imidazol-1-yl, 1H-imidazol-2-yl,1H-imidazol-4-yl, 1H-pyrazol-1-yl, 1H-pyrazol-3-yl, 1H-pyrazol-4-yl,thiophen-2-yl, thiophen-3-yl, furan-2-yl, furan-3-yl, pyrrol-1-yl,pyrrol-2-yl, pyrrol-3-yl, oxazol-2-yl, oxazol-4-yl, oxazol-5-yl,isoxazol-3-yl, isoxazol-4-yl, isoxazol-5-yl, thiazol-2-yl, thiazol-3-yl,thiazol-4-yl, thiazol-5-yl, isothiazol-2-yl, isothiazol-4-yl,isothiazol-5-yl, pyrazol-1-yl, pyrazol-3-yl, pyrazol-4-yl,1,2,3-triazol-1-yl, 1,2,3-triazol-4-yl, 1,2,4-triazol-1-yl,1,2,4-triazol-3-yl, 1,2,4-triazol-4-yl, tetrazol-1-yl, tetrazol-5-yl,pyridin-2-yl, pyridin-3-yl, pyridin-4-yl, pyrazin-2-yl, pyrazin-3-yl,pyrimidin-2-yl, pyrimidin-4-yl, pyrimidin-5-yl, pyrimidin-6-yl,pyridazin-3-yl, pyridazin-4-yl, indol-1-yl, indol-2-yl, indol-3-yl,indol-4-yl, indol-5-yl, indol-6-yl, indol-7-yl, isoindol-1-yl,isoindol-2-yl, isoindol-4-yl, isoindol-5-yl,1H-pyrrolo[2,3-b]pyridin-1-yl, 1H-pyrrolo[2,3-b]pyridin-2-yl,1H-pyrrolo[2,3-b]pyridin-3-yl, 1H-pyrrolo[2,3-b]pyridin-4-yl,1H-pyrrolo[2,3-b]pyridin-5-yl, 1H-pyrrolo[2,3-b]pyridin-6-yl,1H-indazol-1-yl, 1H-indazol-3-yl, 1H-indazol-4-yl, 1H-indazol-5-yl,1H-indazol-6-yl, 1H-indazol-7-yl, methylenedioxyphenyl,ethylenedioxyphenyl, benzofuran-2-yl, benzofuran-3-yl, benzofuran-4-yl,benzofuran-5-yl, benzofuran-6-yl, benzofuran-7-yl,2,3-dihydrobenzofuran-2-yl, 2,3-dihydrobenzofuran-3-yl,benzimidazol-1-yl, benzimidazol-2-yl, benzimidazol-4-yl,benzimidazol-5-yl, benzoxazol-2-yl, benzoxazol-4-yl, benzoxazol-5-yl,benzothiazol-2-yl, benzothiazol-4-yl, benzothiazol-5-yl, purin-2-yl,purin-6-yl, purin-7-yl, purin-8-yl, quinolin-2-yl, quinolin-3-yl,quinolin-4-yl, quinolin-5-yl, quinolin-6-yl, quinolin-7-yl,quinolin-8-yl, 5,6,7,8-tetrahydroquinolin-2-yl,5,6,7,8-tetrahydroquinolin-3-yl, 5,6,7,8-tetrahydroquinolin-4-yl,isoquinolin-1-yl, isoquinolin-3-yl, isoquinolin-4-yl, isoquinolin-5-yl,isoquinolin-6-yl, isoquinolin-7-yl, isoquinolin-8-yl, quinazolin-4-yl,quinoxalin-2-yl, quinoxalin-5-yl and quinoxalin-6-yl groups. Theheterocyclic group is preferably a 1H-imidazol-1-yl, pyrazol-4-yl,thiophen-3-yl, furan-2-yl, pyridin-3-yl, pyridin-4-yl, indol-5-yl,1H-pyrrolo[2,3-b]pyridin-5-yl, benzofuran-2-yl, quinolin-3-yl or5,6,7,8-tetrahydroquinolin-3-yl group, more preferably a1H-imidazol-1-yl, pyridin-3-yl, pyridin-4-yl, indol-5-yl,1H-pyrrolo[2,3-b]pyridin-5-yl, benzofuran-2-yl, quinolin-3-yl or5,6,7,8-tetrahydroquinolin-3-yl group, particularly preferably a1H-imidazol-1-yl, pyridin-3-yl or quinolin-3-yl group.

In the general formula (I), examples of the “substituent(s)” in theunsaturated heterocyclic group represented by R¹ include thesubstituents exemplified above. The substituent(s) are preferably 1 to 3substituents selected from an alkyl group, an alkoxy group, analkoxy-alkyl group, an aralkyl group, an aralkyloxy-alkyl group, ahalogen atom, a halogenoalkyl group, an acyl group, an optionallysubstituted saturated or unsaturated heterocyclic group and anoptionally substituted aromatic hydrocarbon group, more preferably 1 to3 substituents selected from: an alkyl group; an alkoxy group; anunsaturated heterocyclic group optionally having an alkyl group, ahalogenoalkyl group, an aralkyl group or a hydroxyalkyl group; and anaromatic hydrocarbon group optionally having an alkyl group, an alkoxygroup or a carbamoyl group. In this context, examples of the unsaturatedheterocyclic group which may be substituted on the unsaturatedheterocyclic ring represented by R¹ include pyrazole, imidazole,pyridine, pyrimidine, furan and thiophene. Moreover, examples of thearomatic hydrocarbon group include phenyl and naphthyl.

Specific examples of the “substituent(s)” in the unsaturatedheterocyclic group represented by R¹ can include methyl, ethyl,n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, methoxy,ethoxy, n-propoxy, isopropoxy, 1-methylpropoxy, n-butoxy, isobutoxy,tert-butoxy, 1H-pyrazol-4-yl, 1-methyl-1H-pyrazol-4-yl,1-ethyl-1H-pyrazol-4-yl, 1-isopropyl-1H-pyrazol-4-yl,1-benzyl-1H-pyrazol-4-yl, 1-(difluoromethyl)-1H-pyrazol-4-yl,1-(hydroxyethyl)-1H-pyrazol-4-yl, 1H-imidazol-1-yl, pyridin-3-yl,pyridin-4-yl, pyrimidine-5-yl, furan-2-yl, furan-3-yl, thiophen-3-yl,phenyl, 4-methoxyphenyl, 4-carbamoylphenyl, 4-isopropylcarbamoylphenyland 4-dimethylcarbamoylphenyl groups.

Specific examples of preferable R¹ include 1H-imidazol-1-yl,4-phenyl-1H-imidazol-1-yl, 4-(4-carbamoylphenyl)-1H-imidazol-1-yl,4-(4-methoxyphenyl)-1H-imidazol-1-yl,4-(thiophen-3-yl)-1H-imidazol-1-yl, 4-(pyridin-3-yl)-1H-imidazol-1-yl,4-(pyridin-4-yl)-1H-imidazol-1-yl,5-methyl-4-(pyridin-3-yl)-1H-imidazol-1-yl,4-(pyrimidin-5-yl)-1H-imidazol-1-yl, 4-(furan-2-yl)-1H-imidazol-1-yl,4-(furan-3-yl)-1H-imidazol-1-yl, 4-(1H-pyrazol-4-yl)-1H-imidazol-1-yl,4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl,4-(1-ethyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl,4-(1-isopropyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl,4-(1-hydroxymethyl)-(1H-pyrazol-4-yl)-1H-imidazol-1-yl,4-(1-(difluoromethyl)-1H-pyrazol-4-yl)-1H-imidazol-1-yl,4-(1-(hydroxyethyl)-1H-pyrazol-4-yl)-1H-imidazol-1-yl,4-(1-(hydroxymethyl)-1H-pyrazol-4-yl)-1H-imidazol-1-yl,4-(1-benzyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl,4-(1-(benzyloxyethyl)-1H-pyrazol-4-yl)-1H-imidazol-1-yl,1′H-1,4′-biimidazol-1′-yl, pyridin-3-yl, pyridin-4-yl,5-methoxypyridin-3-yl, 6-methoxypyridin-3-yl, 1-benzyl-1H-pyrazol-4-yl,1-methyl-1H-indol-5-yl, 1H-pyrrolo[2,3-b]pyridin-5-yl,1-methyl-1H-pyrrolo[2,3-b]pyridin-5-yl,1-methoxymethyl-1H-pyrrolo[2,3-b]pyridin-5-yl,5,6,7,8-tetrahydroquinolin-3-yl, quinolin-3-yl, thiophen-3-yl,furan-2-yl and benzofuran-2-yl groups. R¹ is more preferably a1H-imidazol-1-yl, 4-(pyridin-3-yl)-1H-imidazol-1-yl,4-(pyridin-4-yl)-1H-imidazol-1-yl, 4-(1H-pyrazol-4-yl)-1H-imidazol-1-yl,4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl,4-(1-ethyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl,4-(1-isopropyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl,4-(1-benzyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl, quinolin-3-yl or4-(1H-pyrazol-4-yl)-1H-imidazol-1-yl group, particularly preferably a4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl,4-(pyridin-3-yl)-1H-imidazol-1-yl or quinolin-3-yl group.

In the general formula (I), the “alkyl group having 1 to 6 carbon atoms”in the “optionally substituted alkyl group having 1 to 6 carbon atoms”represented by R² refers to a linear or branched alkyl group having 1 to6 carbon atoms, for example, a methyl, ethyl, n-propyl, isopropyl,n-butyl, isobutyl, sec-butyl, tert-butyl, pentyl or hexyl group, and ispreferably a methyl, ethyl, n-propyl or isopropyl group.

Examples of the “substituent(s)” in the “optionally substituted alkylgroup having 1 to 6 carbon atoms” represented by R² include thesubstituents exemplified above. Of them, the substituent(s) arepreferably a halogen atom.

The halogen atom-substituted alkyl group is preferably a halogenoalkylgroup having 1 to 6 carbon atoms, more preferably a trifluoromethylgroup.

The “alkenyl group having 2 to 6 carbon atoms” represented by R² refersto the alkenyl group having 2 to 6 carbon atoms exemplified above and ispreferably a vinyl group. Examples of the “substituent(s)” in thealkenyl group include the substituents exemplified above.

R² is more preferably an optionally substituted alkyl group having 1 to6 carbon atoms, or an optionally substituted alkenyl group having 2 to 6carbon atoms, even more preferably an alkyl group having 1 to 6 carbonatoms which optionally has a halogen atom, or an alkenyl group having 2to 6 carbon atoms, particularly preferably an alkyl group having 1 to 4carbon atoms which optionally has a halogen atom.

Any one or two of Y¹, Y², Y³ and Y⁴ represent C—R⁴, and the others arethe same or different and represent CH or N. Of them, preferably, anyone or two of Y¹, Y², Y³ and Y⁴ are C—R⁴, and the others are CH. Morepreferably, Y¹ and Y³ are CH, any one or two of Y² and Y⁴ are C—R⁴, andthe other is CH. These preferable aspects are represented by thefollowing structural formulas:

wherein R³ and R⁴ are as defined above.

Of them, (b1) and (b2) are particularly preferable.

In the general formula (I), R³ represents a cyano group or —CO—R⁵. Ofthem, —CO—R⁵ is particularly preferable.

In the general formula (I), R⁴(s) are the same or different andrepresent a hydrogen atom, a halogen atom, a cyano group, an optionallysubstituted alkyl group having 1 to 6 carbon atoms, a cycloalkyl grouphaving 3 to 7 carbon atoms, an alkenyl group having 2 to 6 carbon atoms,an alkoxy group having 1 to 6 carbon atoms, an aromatic hydrocarbongroup, —N(R⁶)(R⁷), —SR⁸ or —CO—R⁹. Of them, R⁴ is preferably a halogenatom, an alkyl group having 1 to 6 carbon atoms which optionally has amono- or di-(C1-C6 alkyl)amino group or a monocyclic 5- to 7-memberedsaturated heterocyclic group having one or two of any heteroatom of N, Sand O, an alkoxy group having 1 to 6 carbon atoms, —N(R⁶)(R⁷), —SR⁸ or—CO—R⁹, more preferably a halogen atom, an alkyl group having 1 to 6carbon atoms or —N(R⁶)(R⁷).

In the general formula (I), the “halogen atom” represented by R⁴ refersto the halogen atom exemplified above and is preferably a chlorine atom.

In the general formula (I), the “alkyl group having 1 to 6 carbon atoms”in the “optionally substituted alkyl group having 1 to 6 carbon atoms”represented by R⁴ refers to the alkyl group having 1 to 6 carbon atomsexemplified above and is preferably a methyl, ethyl, n-propyl orisopropyl group. Examples of the “substituent(s)” in the “optionallysubstituted alkyl group having 1 to 6 carbon atoms” represented by R⁴include the substituents exemplified above. The “substituent(s)” arepreferably mono- or di-(C1-C6 alkyl)amino groups (e.g., ethylamino anddimethylamino groups) or monocyclic 5- to 7-membered saturatedheterocyclic groups having one or two of any heteroatom of N, S and O(e.g., pyrrolidyl and morpholino groups).

In the general formula (I), the “cycloalkyl group having 3 to 7 carbonatoms” represented by R⁴ refers to the cycloalkyl group having 3 to 7carbon atoms exemplified above and is preferably a cyclopropyl group.

In the general formula (I), the “alkenyl group having 2 to 6 carbonatoms” represented by R⁴ refers to the alkenyl group having 2 to 6carbon atoms exemplified above and is preferably a vinyl orprop-1-en-2-yl group.

In the general formula (I), the “alkoxy group having 1 to 6 carbonatoms” represented by R⁴ refers to the alkoxy group having 1 to 6 carbonatoms exemplified above and is preferably a methoxy group.

In the general formula (I), the “mono- or di-alkylamino group” in the“optionally substituted mono- or di-alkylamino group” represented by R⁵refers to the mono- or dialkylamino group exemplified above and ispreferably a mono- or di-(C1-C6 alkyl)amino group. Examples of the“substituent(s)” in the “optionally substituted mono- or di-alkylaminogroup” represented by R⁵ include the substituents exemplified above.

R⁵ is more preferably an amino, hydroxylamino or mono- or di-(C1-C6alkyl)amino group, particularly preferably an amino group.

In the general formula (I), the “alkyl group having 1 to 6 carbon atoms”in the “optionally substituted alkyl group having 1 to 6 carbon atoms”represented by R⁶ or R⁷ refers to the alkyl group having 1 to 6 carbonatoms exemplified above and is preferably an ethyl, n-propyl, n-butyl,isobutyl, sec-butyl or pentyl group. Examples of the “substituent(s)” inthe “optionally substituted alkyl group having 1 to 6 carbon atoms”represented by R⁶ or R⁷ include the substituents exemplified above. The“substituent(s)” are preferably a hydroxyl group, cycloalkyl groupshaving 3 to 7 carbon atoms (e.g., a cyclohexyl group), saturatedheterocyclic groups (e.g., pyrrolidyl and morpholino groups),unsaturated heterocyclic groups (e.g., a pyridyl group), mono- ordi-(C1-C6 alkyl)amino groups (e.g., ethylamino and dimethylaminogroups), (C1-C6 alkyl)thio groups (e.g., a methylthio group), or alkoxygroups having 1 to 6 carbon atoms which optionally has a hydroxyl group.

In the general formula (I), the “halogenoalkyl group having 1 to 6carbon atoms” represented by R⁶ or R⁷ refers to the halogenoalkyl grouphaving 1 to 6 carbon atoms exemplified above and is preferably a2,2-difluoroethyl or 2,2,2-trifluoroethyl group.

In the general formula (I), examples of the “cycloalkyl group having 3to 7 carbon atoms” in the “optionally substituted cycloalkyl grouphaving 3 to 7 carbon atoms” represented by R⁶ or R⁷ include cyclopropyl,cyclobutyl, cyclopentyl, cyclohexyl and cycloheptyl groups. Thecycloalkyl group having 3 to 7 carbon atoms is preferably a cyclopropyl,cyclopentyl or cyclohexyl group. Examples of the “substituent(s)” in the“optionally substituted cycloalkyl group having 3 to 7 carbon atoms”represented by R⁶ or R⁷ include the substituents exemplified above. Thesubstituent(s) are preferably hydroxyl, amino, amino acid-derivedacyloxy, alkanoylamino or alkylsulfonylamino groups, or the like.

In the general formula (I), the “aralkyl group” in the “optionallysubstituted aralkyl group” represented by R⁶ or R⁷ refers to the aralkylgroup exemplified above and is preferably an aralkyl group having 7 to12 carbon atoms, specifically, a benzyl group. Examples of the“substituent(s)” in the “optionally substituted aralkyl group”represented by R⁶ or R⁷ include the substituents exemplified above.Specific examples of the substituent(s) include saturated heterocyclicgroups such as a pyrrolidinyl group.

In the general formula (I), the “aromatic hydrocarbon group” in the“optionally substituted aromatic hydrocarbon group” represented by R⁶ orR⁷ refers to the aromatic hydrocarbon group having 6 to 14 carbon atomsexemplified above and is preferably a phenyl group. Examples of the“substituent(s)” in the “optionally substituted aromatic hydrocarbongroup” represented by R⁶ or R⁷ include the substituents exemplifiedabove. The substituent(s) are preferably halogen atoms, alkylthio groups(e.g., a methylthio group), saturated heterocyclic groups (e.g., amorpholino group), or substituted carbamoyl groups (e.g., apyrrolidine-carbonyl group).

In the general formula (I), the “saturated heterocyclic group” in the“optionally substituted saturated heterocyclic group” represented by R⁶or R⁷ refers to the saturated heterocyclic group exemplified above andis preferably a piperidinyl or tetrahydropyranyl group. Examples of the“substituent(s)” in the “optionally substituted saturated heterocyclicgroup” represented by R⁶ or R⁷ include the substituents exemplifiedabove. The substituent(s) are preferably alkyl groups having 1 to 6carbon atoms (e.g., a methyl group), acyl groups (e.g., an acetylgroup), carbonyl groups having a saturated heterocyclic group (e.g., a2,6-dihydroxypyrimidinyl-4-carbonyl group), or aminoalkylcarbonyl groups(e.g., a 2-aminoacetyl group).

In the general formula (I), the “unsaturated heterocyclic group” in the“optionally substituted unsaturated heterocyclic group” represented byR⁶ or R⁷ refers to the unsaturated heterocyclic group exemplified aboveand is preferably a pyridyl or oxazolyl group. Examples of the“substituent(s)” in the “optionally substituted unsaturated heterocyclicgroup” represented by R⁶ or R⁷ include the substituents exemplifiedabove.

In the general formula (I), the “saturated heterocyclic group” which isoptionally formed by R⁶ and R⁷ together with the nitrogen atom to whichthey are bonded refers to a monocyclic or bicyclic saturatedheterocyclic group preferably having 1 to 4 of any atom of oxygen,nitrogen and sulfur atoms, for example, a pyrrolidinyl, piperidinyl,piperazinyl, hexamethyleneimino, morpholino, thiomorpholino,homopiperazinyl, tetrahydrofuranyl or tetrahydropyranyl group.

In the general formula (I), it is preferred for the combination of R⁶and R⁷ that R⁶ should be a hydrogen atom or an optionally substitutedalkyl group having 1 to 6 carbon atoms, and R⁷ should represent ahydrogen atom, an optionally substituted alkyl group having 1 to 6carbon atoms, an optionally substituted cycloalkyl group having 3 to 7carbon atoms, an optionally substituted aralkyl group having 7 to 12carbon atoms, an optionally substituted aromatic hydrocarbon grouphaving 6 to 14 carbon atoms, an optionally substituted monocyclic orbicyclic saturated heterocyclic group having 1 to 4 heteroatoms selectedfrom N, S and O, or an optionally substituted monocyclic or bicyclicunsaturated heterocyclic group having 1 to 4 heteroatoms selected fromN, S and O, or R⁶ and R⁷ should optionally form a 5- to 7-memberedsaturated heterocyclic group, together with the nitrogen atom to whichthey are bonded. More preferably, R⁶ is a hydrogen atom, and R⁷ is ahydrogen atom, an optionally substituted alkyl group having 1 to 6carbon atoms, an optionally substituted cycloalkyl group having 3 to 7carbon atoms, or an optionally substituted monocyclic or bicyclicsaturated heterocyclic group having 1 to 4 heteroatoms selected from N,S and O. Particularly preferably, R⁶ is a hydrogen atom, and R⁷ is anoptionally substituted alkyl group having 1 to 6 carbon atoms or anoptionally substituted cycloalkyl group having 3 to 7 carbon atoms.

In the general formula (I), the “cycloalkyl group having 3 to 7 carbonatoms” in the “optionally substituted cycloalkyl group having 3 to 7carbon atoms” represented by R⁸ refers to the cycloalkyl group having 3to 7 carbon atoms exemplified above and is preferably a cyclohexylgroup. Examples of the “substituent(s)” in the “optionally substitutedcycloalkyl group having 3 to 7 carbon atoms” represented by R⁸ includethe substituents exemplified above. The substituent(s) are preferably ahydroxyl group.

In the general formula (I), the “aromatic hydrocarbon group” in the“optionally substituted aromatic hydrocarbon group” represented by R⁸refers to the aromatic hydrocarbon group having 6 to 14 carbon atomsexemplified above and is preferably a phenyl group. Examples of the“substituent(s)” in the “optionally substituted aromatic hydrocarbongroup” represented by R⁸ include the substituents exemplified above. Thesubstituent(s) are preferably a hydroxyl group.

R⁸ is preferably an optionally substituted cycloalkyl group having 3 to7 carbon atoms, or an optionally substituted aromatic hydrocarbon grouphaving 6 to 14 carbon atoms.

In the general formula (I), the “mono- or di-alkylamino group” in the“optionally substituted mono- or di-alkylamino group” represented by R⁹refers to the mono- or dialkylamino group exemplified above and ispreferably a mono- or di-(C1-C6 alkyl)amino group. Examples of the“substituent(s)” in the “optionally substituted mono- or di-alkylaminogroup” represented by R⁹ include the substituents exemplified above.

R⁹ is preferably a hydrogen atom, a hydroxyl group, an amino group or amono- or di-(C1-C6 alkyl)amino group, particularly preferably a hydrogenatom.

The compound of the present invention is preferably a compoundrepresented by the general formula (I) or a salt thereof wherein X¹ isCH or N; any one of X², X³ and X⁴ is N, and the others are CH; any oneor two of Y¹, Y², Y³ and Y⁴ are C—R⁴, and the others are the same ordifferent and represent CH or N; R¹ is an optionally substitutedmonocyclic or bicyclic unsaturated heterocyclic group having 1 to 4heteroatoms selected from N, S and O; R² is an alkyl group having 1 to 6carbon atoms which optionally has a halogen atom, or an alkenyl grouphaving 2 to 6 carbon atoms; R³ is —CO—R⁵; R⁴(s) are the same ordifferent and represent a hydrogen atom, a halogen atom, a cyano group,an optionally substituted alkyl group having 1 to 6 carbon atoms, analkenyl group having 2 to 6 carbon atoms, an alkoxy group having 1 to 6carbon atoms, an aromatic hydrocarbon group, —N(R⁶)(R⁷), —S—R⁸ or—CO—R⁹; R⁵ is an amino group or a mono- or di-(C1-C6 alkyl)amino group;R⁶ and R⁷ are the same or different and represent a hydrogen atom, anoptionally substituted alkyl group having 1 to 6 carbon atoms, ahalogenoalkyl group having 1 to 6 carbon atoms, an optionallysubstituted cycloalkyl group having 3 to 7 carbon atoms, an optionallysubstituted aralkyl group, an optionally substituted aromatichydrocarbon group, an optionally substituted saturated heterocyclicgroup or an optionally substituted unsaturated heterocyclic group, or R⁶and R⁷ form a saturated heterocyclic group, together with the nitrogenatom to which they are bonded; R⁸ is an optionally substitutedcycloalkyl group having 3 to 7 carbon atoms, or an optionallysubstituted aromatic hydrocarbon group; and R⁹ is a hydrogen atom, ahydroxyl group, an amino group optionally having a hydroxyl group, or anoptionally substituted mono- or di-alkylamino group.

The compound of the present invention is more preferably a compoundrepresented by the general formula (I) or a salt thereof wherein X¹ isCH or N; any one of X², X³ and X⁴ is N, and the others are CH; any oneor two of Y¹, Y², Y³ and Y⁴ are C—R⁴, and the others are the same ordifferent and represent CH or N; R¹ is an optionally substitutedmonocyclic 5- to 6-membered unsaturated heterocyclic group having 1 to 3heteroatoms selected from N, S and O, or an optionally substitutedbicyclic 9- to 10-membered unsaturated heterocyclic group having 1 to 3heteroatoms selected from N, S and O; R² is an alkyl group having 1 to 6carbon atoms which optionally has a halogen atom, or an alkenyl grouphaving 2 to 6 carbon atoms; R³ is —CO—R⁵; R⁴(s) are the same ordifferent and represent a hydrogen atom, a halogen atom, a cyano group,an optionally substituted alkyl group having 1 to 6 carbon atoms, analkenyl group having 2 to 6 carbon atoms, an alkoxy group having 1 to 6carbon atoms, an aromatic hydrocarbon group, —N(R⁶)(R⁷), —S—R⁸ or—CO—R⁹; R⁵ is an amino group or a mono- or di-(C1-C6 alkyl)amino group;R⁶ and R⁷ are the same or different and represent a hydrogen atom, anoptionally substituted alkyl group having 1 to 6 carbon atoms, ahalogenoalkyl group having 1 to 6 carbon atoms, an optionallysubstituted cycloalkyl group having 3 to 7 carbon atoms, an optionallysubstituted aralkyl group, an optionally substituted aromatichydrocarbon group, an optionally substituted saturated heterocyclicgroup or an optionally substituted unsaturated heterocyclic group, or R⁶and R⁷ form a saturated heterocyclic group, together with the nitrogenatom to which they are bonded; R⁸ is an optionally substitutedcycloalkyl group having 3 to 7 carbon atoms, or an optionallysubstituted aromatic hydrocarbon group; and R⁹ is a hydrogen atom, ahydroxyl group, an amino group optionally having a hydroxyl group, or anoptionally substituted mono- or di-alkylamino group.

The compound of the present invention is even more preferably a compoundrepresented by the general formula (I) or a salt thereof wherein X′ isCH or N; X² is N, and X³ and X⁴ are CH; any one or two of Y¹, Y², Y³ andY⁴ are C—R⁴, and the others are the same or different and represent CHor N; R¹ is an optionally substituted monocyclic 5- to 6-memberedunsaturated heterocyclic group having 1 to 3 heteroatoms selected fromN, S and O, or an optionally substituted bicyclic 9- to 10-memberedunsaturated heterocyclic group having 1 to 3 heteroatoms selected fromN, S and O; R² is an alkyl group having 1 to 6 carbon atoms whichoptionally has a halogen atom, or an alkenyl group having 2 to 6 carbonatoms; R³ is —CO—R⁵; R⁴(s) are the same or different and represent ahydrogen atom, a halogen atom, a cyano group, an optionally substitutedalkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6carbon atoms, an alkoxy group having 1 to 6 carbon atoms, an aromatichydrocarbon group, —N(R⁶)(R⁷), —S—R⁸ or —CO—R⁹; R⁵ is an amino group ora mono- or di-(C1-C6 alkyl)amino group; R⁶ and R⁷ are the same ordifferent and represent a hydrogen atom, an optionally substituted alkylgroup having 1 to 6 carbon atoms, a halogenoalkyl group having 1 to 6carbon atoms, an optionally substituted cycloalkyl group having 3 to 7carbon atoms, an optionally substituted aralkyl group, an optionallysubstituted aromatic hydrocarbon group, an optionally substitutedsaturated heterocyclic group or an optionally substituted unsaturatedheterocyclic group, or R⁶ and R⁷ form a saturated heterocyclic group,together with the nitrogen atom to which they are bonded; R⁸ is anoptionally substituted cycloalkyl group having 3 to 7 carbon atoms, oran optionally substituted aromatic hydrocarbon group; and R⁹ is ahydrogen atom, a hydroxyl group, an amino group optionally having ahydroxyl group, or an optionally substituted mono- or di-alkylaminogroup.

The compound of the present invention is further preferably a compoundrepresented by the general formula (I) or a salt thereof wherein X¹ isCH or N; X² is N, and X³ and X⁴ are CH; any one or two of Y¹, Y², Y³ andY⁴ are C—R⁴, and the others are the same or different and represent CHor N; R¹ is any of an optionally substituted 1H-imidazol-1-yl group, anoptionally substituted pyrazol-4-yl group, an optionally substitutedthiophen-3-yl group, an optionally substituted furan-2-yl group, anoptionally substituted pyridin-3-yl group, an optionally substitutedpyridin-4-yl group, an optionally substituted indol-5-yl group, anoptionally substituted 1H-pyrrolo[2,3-b]pyridin-5-yl group, anoptionally substituted benzofuran-2-yl group, an optionally substitutedquinolin-3-yl group and an optionally substituted5,6,7,8-tetrahydroquinolin-3-yl group; R² is an alkyl group having 1 to6 carbon atoms which optionally has a halogen atom, or an alkenyl grouphaving 2 to 6 carbon atoms; R³ is —CO—R⁵; R⁴(s) are the same ordifferent and represent a hydrogen atom, a halogen atom, a cyano group,an optionally substituted alkyl group having 1 to 6 carbon atoms, analkenyl group having 2 to 6 carbon atoms, an alkoxy group having 1 to 6carbon atoms, an aromatic hydrocarbon group, —N(R⁶)(R⁷), —S—R⁸ or—CO—R⁹; R⁵ is an amino group or a mono- or di-(C1-C6 alkyl)amino group;R⁶ and R⁷ are the same or different and represent a hydrogen atom, anoptionally substituted alkyl group having 1 to 6 carbon atoms, ahalogenoalkyl group having 1 to 6 carbon atoms, an optionallysubstituted cycloalkyl group having 3 to 7 carbon atoms, an optionallysubstituted aralkyl group, an optionally substituted aromatichydrocarbon group, an optionally substituted saturated heterocyclicgroup or an optionally substituted unsaturated heterocyclic group, or R⁶and R⁷ form a saturated heterocyclic group, together with the nitrogenatom to which they are bonded; R⁸ is an optionally substitutedcycloalkyl group having 3 to 7 carbon atoms, or an optionallysubstituted aromatic hydrocarbon group; and R⁹ is a hydrogen atom, ahydroxyl group, an amino group optionally having a hydroxyl group, or anoptionally substituted mono- or di-alkylamino group.

The compound of the present invention is further preferably a compoundrepresented by the general formula (I) or a salt thereof wherein X¹ isCH or N; X² is N, and X³ and X⁴ are CH; Y¹ and Y³ are CH, any one or twoof Y² and Y⁴ are C—R⁴, and the other is CH; R¹ is any of an optionallysubstituted 1H-imidazol-1-yl group, an optionally substitutedpyrazol-4-yl group, an optionally substituted thiophen-3-yl group, anoptionally substituted furan-2-yl group, an optionally substitutedpyridin-3-yl group, an optionally substituted pyridin-4-yl group, anoptionally substituted indol-5-yl group, an optionally substituted1H-pyrrolo[2,3-b]pyridin-5-yl group, an optionally substitutedbenzofuran-2-yl group, an optionally substituted quinolin-3-yl group andan optionally substituted 5,6,7,8-tetrahydroquinolin-3-yl group; R² isan alkyl group having 1 to 6 carbon atoms which optionally has a halogenatom, or an alkenyl group having 2 to 6 carbon atoms; R³ is —CO—R⁵; R⁴is a halogen atom, an alkyl group having 1 to 6 carbon atoms whichoptionally has a mono- or di-(C1-C6 alkyl)amino group or a monocyclic 5-to 7-membered saturated heterocyclic group having one or two of anyheteroatom of N, S and O, an alkoxy group having 1 to 6 carbon atoms,—N(R⁶)(R⁷), —SR⁸ or —CO—R⁹; R⁵ is an amino group or a mono- or di-(C1-C6alkyl)amino group; R⁶ is a hydrogen atom or an optionally substitutedalkyl group having 1 to 6 carbon atoms, and R⁷ is a hydrogen atom, anoptionally substituted alkyl group having 1 to 6 carbon atoms, anoptionally substituted cycloalkyl group having 3 to 7 carbon atoms, anoptionally substituted aralkyl group having 7 to 12 carbon atoms, anoptionally substituted aromatic hydrocarbon group having 6 to 14 carbonatoms, a monocyclic or bicyclic optionally substituted saturatedheterocyclic group having 1 to 4 heteroatoms selected from N, S and O,or a monocyclic or bicyclic optionally substituted unsaturatedheterocyclic group having 1 to 4 heteroatoms selected from N, S and O,or R⁶ and R⁷ form a 5- to 7-membered saturated heterocyclic group,together with the nitrogen atom to which they are bonded; R⁸ is anoptionally substituted cycloalkyl group having 3 to 7 carbon atoms, oran optionally substituted aromatic hydrocarbon group having 6 to 14carbon atoms; and R⁹ is a hydrogen atom, a hydroxyl group, an aminogroup or a mono- or di-(C1-C6 alkyl)amino group.

The compound of the present invention can be produced, for example,according to the following reaction scheme:

In the Reaction Scheme 1, Z¹ represents a halogen atom; Z² represents ahydrogen atom or a halogen atom; and X², X³, X⁴, R¹ and R² are asdefined above.

<Step 1>

Step 1 is the step of reaction of an easily obtainable compoundrepresented by the general formula (1) with a metal reagent such as alithium reagent, and then introducing thereto a carbonyl groupcorresponding to R².

Examples of the metal reagent used include lithium diisopropylamide,lithium bis(trimethylsilyl)amide, sodium bis(trimethylsilyl)amide andpotassium bis(trimethylsilyl)amide. The metal reagent is preferablylithium diisopropylamide and is preferably used at 1 to 2 equivalentswith respect to the starting compound (hereinafter, the term“equivalent” means equivalent with respect to the starting compound).The reaction temperature is preferably −78 to 0° C., and the reactiontime is preferably 10 minutes to 2 hours. An ether solvent (e.g.,tetrahydrofuran (THF) and diethyl ether) or a nonpolar solvent (e.g.,benzene and toluene) can be used as a reaction solvent.

Subsequently, a carbonyl group corresponding to R² can be introducedthereto through reaction with an ester, Weinreb amide or aldehyde formof R². When the aldehyde form of R² is used, the obtained hydroxyl formcan be subjected to a usual method known in the art, for example,oxidation reaction with active manganese dioxide or the like to producea carbonyl compound represented by the general formula (2).

<Step 2>

Step 2 is the step of reaction of the compound represented by thegeneral formula (2) with a hydrazine to produce an azaindazole compoundrepresented by the general formula (3).

The hydrazine can be any of hydrazine, hydrazine hydrate and hydrazinehydrochloride and can be used at 1 to 30 equivalents. The reactiontemperature is preferably 0° C. to the boiling point of a solvent, andthe reaction time is preferably 30 minutes to 50 hours. An alcoholicsolvent (e.g., methanol, ethanol and isopropanol), an ether solvent(e.g., tetrahydrofuran and diisopropyl ether), an aprotic highly polarsolvent (e.g., dimethylformamide, dimethylacetamide and dimethylsulfoxide), or a mixed solvent thereof can be used as a reactionsolvent.

<Step 3>

Step 3 is the step of introduction of R¹ to the azaindazole compoundrepresented by the general formula (3) to produce an azaindazolecompound represented by the general formula (4).

When Z² in the general formula (3) is a hydrogen atom and X² is anitrogen atom, the nitrogen atom represented by X² is converted to anN-oxide form, and Z² can subsequently be halogenated.

The conversion of the nitrogen atom represented by X² to an N-oxide formcan be performed by producing the N-oxide form through reaction with anoxidizing agent, for example, hydrogen peroxide or m-chloroperbenzoicacid, at 1 to 5 equivalents in a halogen solvent (e.g., chloroform,dichloromethane and dichloroethane), a hydrocarbon solvent (e.g.,hexane, heptane and toluene), an ether solvent (e.g., ethylene glycoldimethyl ether and tetrahydrofuran), or a mixed solvent thereof.Subsequently, Z² can be halogenated through reaction with phosphorusoxychloride, oxalyl chloride, phosphorus oxybromide, thionyl chloride,tetrabutylammonium bromide, or the like at 1 to 5 equivalents in ahalogen solvent (e.g., chloroform, dichloromethane and dichloroethane),a hydrocarbon solvent (e.g., hexane, heptane and toluene), an ethersolvent (e.g., ethylene glycol dimethyl ether and tetrahydrofuran), or amixed solvent thereof.

For a compound represented by the general formula (3) having the halogenatom represented by Z², a Suzuki coupling method or aromatic amine canbe used to produce an azaindazole compound represented by the generalformula (4).

The Suzuki coupling method can be performed according to a methoddescribed in Chemical Review, 1995, 95, 2457-2483. Boronic acid orboronic acid ester corresponding to R¹ can be synthesized by a usualmethod known in the art. When a halogen compound corresponding to R¹ iseasily obtainable, the compound represented by the general formula (3)is converted to boronic acid or boronic acid ester, which can then besubjected to the Suzuki coupling method in the same way as above toproduce an azaindazole compound represented by the general formula (4).

Moreover, the reaction with aromatic amine can be performed by reactingaromatic amine such as imidazole or triazole with halogen-substitutedazaindazole represented by the general formula (3) through nucleophilicaddition for synthesis. This reaction can usually be carried out at areaction temperature of room temperature to the boiling point of asolvent for a reaction time of 30 minutes to 50 hours using anucleophilic reagent at 1 to 10 equivalents in the presence of a base.Moreover, the reaction can also be performed by the addition of a metalsuch as palladium or copper.

The solvent used is not particularly limited as long as it is inert inthis reaction. For example, an ether solvent (e.g., tetrahydrofuran,1,2-dimethoxyethane and dioxane), an aprotic highly polar solvent (e.g.,dimethylformamide, dimethylacetamide and dimethyl sulfoxide), or a mixedsolvent thereof can be used.

In the Reaction Scheme 2, Z² represents a halogen atom; Boc represents atert-butoxycarbonyl group; and X², X³, X⁴, R¹ and R² are as definedabove.

<Step 4>

Step 4 is the step of formation of an anion of the methyl group of aneasily obtainable compound represented by the general formula (5) usinga base and then reacting therewith a haloalkyl compound or the like tointroduce R². This reaction can be performed, for example, according toa method described in Synthesis 1996, 877-882.

<Step 5>

Step 5 is the step of formation of an anion of a compound represented bythe general formula (6), then introducing thereto a carbonyl group, andperforming cyclization under acidic conditions simultaneously withdeprotection reaction to obtain an azaindole compound represented by thegeneral formula (7).

The anion of the compound represented by the general formula (6) can beformed in the same way as <Step 4> and then reacted withN,N-dimethylformamide, ethyl formate, or the like, preferablyN,N-dimethylformamide, to introduce thereto a carbonyl group.Hydrochloric acid, sulfuric acid, trifluoroacetic acid, acetic acid, orthe like can be used as the acidic conditions for performing cyclizationsimultaneously with deprotection reaction. Hydrochloric acid ispreferable. The reaction temperature is usually 0 to 100° C., preferably0 to 60° C. The reaction time differs depending on the reactiontemperature, the starting compound, reagents, and solvents used, and isusually 15 minutes to 5 hours, preferably 30 minutes to 2 hours.

<Step 6>

Step 6 is the step of acquisition of an N-oxide form of the compoundrepresented by the general formula (7) using an oxidizing agent andsubsequently halogenating the N-oxide form to obtain a compoundrepresented by the general formula (8).

This step can be performed in the same way as <Step 3>.

<Step 7>

Step 7 is the step of introduction of R¹ to the compound represented bythe general formula (8).

This step can be performed in the same way as <Step 3> to obtain anazaindole compound represented by the general formula (9).

In the Reaction Scheme 3, Z¹ represents an eliminable functional groupsuch as a halogen atom; and X¹, X², X³, X⁴, R¹, R², R³, Y¹, Y², Y³ andY⁴ are as defined above.

<Step 8>

Step 8 is the step of reaction of the nitrogen atom at position 1 of theazaindazole compound represented by the general formula (4) or theazaindole compound represented by the general formula (9) withhalo-substituted phenyl, halo-substituted pyridine, halo-substitutedpyrimidine, or the like represented by the general formula (10) toobtain the compound represented by the general formula (I).

In this step, Z¹ in the compound represented by the general formula (10)can be any eliminable functional group. Examples thereof include achlorine atom, a bromine atom and a trifluoromethylsulfonyl group.Moreover, R³ is preferably an electron-withdrawing group. Examplesthereof include nitrile, ester and nitro groups. The compoundrepresented by the general formula (10) is easily obtainable or can besynthesized, for example, according to a method described in Synthesis1975, 502 or J. Med. Chem. 1985, 1387-93.

0.5 to 10 mol, preferably 0.8 to 2 mol of the compound represented bythe general formula (10) can be used with respect to 1 mol of thecompound represented by the general formula (4) or (9) in the reactionat 0 to 180° C., preferably 20 to 150° C. in an appropriate solvent inthe presence of 0.5 to 10 mol, preferably 0.8 to 2 mol of a base toobtain the compound represented by the general formula (I).

The solvent used is not particularly limited as long as it does notinfluence the reaction. Examples thereof include acetonitrile,tetrahydrofuran, dioxane, diethyl ether, diisopropyl ether, benzene,toluene, N,N-dimethylformamide, N,N-dimethylacetamide,N-methylpyrrolidone and dimethyl sulfoxide. These solvents can be usedalone or as a mixture. An inorganic base (e.g., lithium hydroxide,sodium hydroxide, potassium hydroxide, calcium hydroxide, bariumhydroxide, lithium carbonate, sodium carbonate, potassium carbonate,sodium hydride and cesium carbonate) or an organic base (e.g., pyridine,lutidine, collidine, 4-(N,N-dimethylamino)pyridine, triethylamine,diisopropylethylamine, 1,5-diazabicyclo[4.3.0]non-5-ene and1,8-diazabicyclo[5.4.0]undec-7-ene) can be used as the base. Moreover,the reaction can also be performed by the addition of copper (I) and1,2-diamine.

When Y² and Y⁴ in the general formula (I) are a carbon atom having ahalogen atom, the halogen atom may be converted to amine, thioether, orthe like through reaction with amine, thiol, or the like, or the alkylchain can be elongated by a Suzuki coupling method or the like.Moreover, when Y² and Y⁴ are a carbon atom having a nitro group, thenitro group is reduced, by a usual method known in the art, to an aminogroup, with which a substituent such as an alkyl chain can then beelongated. Moreover, when Y² and Y⁴ are a carbon atom having a formyl orketone group, the formyl or ketone group is converted, by reductiveamination using a reducing agent such as a 2-picoline-borane complex, toamine, with which a substituent such as an alkyl chain can then beelongated.

For the substituent such as a nitrile group, an ester group, or a nitrogroup represented by R³ or for R⁴ in any of Y¹, Y², Y³ and Y⁴, thedesired compound can be produced by a usual method known in the art.

For example, when R³ is a nitrile group, a carboxamide compound can beproduced by a usual hydrolysis method known in the art. Moreover, whenR³ is an ester group, a carboxylic acid compound can be produced byhydrolysis and can further be reacted with amine to produce the desiredamide compound. When R³ is a nitro group, an amine compound can beproduced by catalytic reduction or the like and can further be reactedwith carboxylic acid, isocyanate, or the like to obtain the desiredamide compound, urea compound, or the like.

Moreover, for example, when R⁴ is a halogen atom, the desired aminecompound or thioether compound can be produced.

The compound of the present invention represented by the general formula(I) can also be obtained by reacting the compound represented by thegeneral formula (3) or (8) with the compound represented by the generalformula (10) according to the method of <Step 8> and the converting thehalogen atom represented by Z² to aromatic amine according to the methodof <Step 7>.

In the Reaction Scheme 4, Z¹ and Z² represent an eliminable functionalgroup such as a halogen atom; and R¹, R², R³, Y¹, Y², Y³ and Y⁴ are asdefined above.

<Step 9>

Step 9 is the step of reaction of the compound represented by thegeneral formula (10) with a hydrazine to produce a hydrazyl compoundrepresented by the general formula (11).

The hydrazine can be any of hydrazine, hydrazine hydrate and hydrazinehydrochloride and can be used at 1 to 30 equivalents. The reactiontemperature is preferably 60 to 100° C., and the reaction time ispreferably 1 to 10 hours. An alcoholic solvent (e.g., methanol, ethanoland isopropanol), an ether solvent (e.g., tetrahydrofuran anddiisopropyl ether), or an aprotic highly polar solvent (e.g.,dimethylformamide, dimethylacetamide and dimethyl sulfoxide) can be usedas a reaction solvent. Alternatively, the reaction can also be performedunder solvent-free conditions.

<Step 10>

Step 10 is the step of reaction of the compound represented by thegeneral formula (11) with acetonitrile in R² to produce a5-aminopyrazole compound.

The acetonitrile used is easily obtainable acetoacetonitrile,propionylacetonitrile, isopropionylacetonitrile,trifluoroacetoacetonitrile, or the like, which can be used to introducethereto corresponding R². A mixed solvent of an alcoholic solvent (e.g.,methanol, ethanol and isopropanol) and an acid (e.g., concentratedhydrochloric acid, sulfuric acid, mesylic acid and tosylic acid) can beused as a solvent. The reaction temperature is preferably roomtemperature to the boiling point of a solvent, and the reaction time ispreferably 2 to 24 hours.

<Step 11>

Step 11 is the step of reaction of the compound represented by thegeneral formula (12) with 5-methoxymethylene Meldrum's acid to produce acompound represented by the general formula (13).

The 5-methoxymethylene Meldrum's acid is used at 1 to 3 equivalents. Ahigh-boiling-point solvent (e.g., diphenyl ether, biphenol and Dowtherm)is used as a reaction solvent. The reaction temperature is preferably150 to 220° C., and the reaction time is preferably 1 to 5 hours.

<Step 12>

Step 12 is the step of halogenation of the compound represented by thegeneral formula (13).

The reaction can be performed using phosphorus oxychloride, phosphorusoxybromide, thionyl chloride, or the like at 1 to 5 equivalents in ahalogen solvent (e.g., chloroform and dichloroethane) or an aprotichighly polar solvent (e.g., dimethylformamide, dimethylacetamide anddimethyl sulfoxide) to synthesize a compound represented by the generalformula (14).

<Step 14>

Step 14 is the step of introduction of R¹ to the compound represented bythe general formula (13).

This step can be performed in the same way as <Step 3> to obtain thecompound represented by the general formula (I).

When introduction of a substituent or the conversion of a functionalgroup is carried out in the <Step 1> to <Step 14> described above, ifthere is a reactive substituent which cause reaction other than intendedreactions, a protective group may be introduced to the reactivesubstituent in advance, as appropriate, by means known per se in theart, and the protective group may be removed by means known in the artafter the intended reaction, to produce the subject compound. After thecompletion of reaction, the compound of interest in each of these stepsis collected from the reaction mixture according to a routine method.For example, the reaction mixture is appropriately neutralized, orinsoluble compound, if any, is removed by filtration. Then, the reactionsolution is subjected to extraction with a water-immiscible organicsolvent such as toluene, ethyl acetate or chloroform, and the extractsare washed with water or the like. Then, the organic layer containingthe compound of interest is concentrated under reduced pressure, and thesolvent is distilled off to obtain the compound of interest. Theobtained compound of interest can be separated and purified, ifnecessary, by a routine method, for example, recrystallization,reprecipitation or a method generally used in the usual separation orpurification of organic compounds (e.g., adsorption columnchromatography using a carrier such as silica gel, alumina ormagnesium-silica gel Florisil, partition column chromatography using acarrier such as Sephadex LH-20 (manufactured by Pharmacia), AmberliteXAD-11 (manufactured by Rohm and Haas Company) or Diaion HP-20(manufactured by Mitsubishi Chemical Corp.), ion-exchange chromatographyor normal- or reverse-phase column chromatography using a silica gel oralkylated silica gel, preferably, silica gel column chromatography).When the compound (I) is obtained in a free form, this free form can beconverted to its pharmacologically acceptable salt by a method known perse in the art or a method equivalent thereto. Contrarily, when thecompound (I) is obtained in a salt form, this salt can be converted to afree form or other salts of interest by a method known per se in the artor a method equivalent thereto.

When the compound (I) has isomers such as optical isomers,stereoisomers, positional isomers or rotational isomers, either of theisomers and a mixture thereof are both encompassed by the compound (I).For example, when the compound (I) has optical isomers, optical isomersresolved from racemic mixtures are also encompassed by the compound (I).Each of these isomers can be obtained as a single product by synthesisand separation (concentration, solvent extraction, columnchromatography, recrystallization, etc.) approaches known per se in theart.

The compound (I) may be crystalline. A single crystal form and apolymorphic mixture are both encompassed by the compound (I). Thesecrystals can be produced by crystallizing the compound (I) using acrystallization method known per se in the art. The compound (I) may bea solvate (e.g., a hydrate) or a non-solvate. Both of them areencompassed by the compound (I).

A compound labeled with an isotope (e.g., ³H, ¹⁴C, ³⁵S and ¹²⁵I) or thelike is also encompassed by the compound (I).

A prodrug of the compound (I) or the salt thereof (hereinafter,abbreviated to the compound (I)) refers to a compound converted to thecompound (I) through reaction caused by an enzyme, gastric acid, or thelike under physiological conditions in vivo, i.e., a compound convertedto the compound (I) by enzymatic oxidation, reduction, hydrolysis, orthe like or a compound converted to the compound (I) by hydrolysis orthe like caused by gastric acid or the like. Moreover, the prodrug ofthe compound (I) can be any of those converted to the compound ((I))under physiological conditions as described in “Pharmaceutical Researchand Development” Vol. 7, Molecular Design, published in 1990 by HirokawaPublishing Company, p. 163-198.

The compound (I) of the present invention exhibits excellent HSP90inhibitory activity and has excellent cancer cell proliferationinhibitory activity. Thus, the compound (I) of the present invention isuseful as a pharmaceutical product such as an anticancer agent.Moreover, the compound (I) of the present invention is highly soluble inwater and can be administered orally. Thus, the compound (I) of thepresent invention is useful as an orally administrable pharmaceuticalproduct such as an anticancer agent. Examples of malignant tumor includehead and neck cancer, esophagus cancer, gastric cancer, colon cancer,rectum cancer, liver cancer, gallbladder cancer, cholangiocarcinoma,biliary tract cancer, pancreatic cancer, lung cancer, breast cancer,ovarian cancer, cervical cancer, endometrial cancer, kidney cancer,bladder cancer, prostatic cancer, testicular tumor, osteosarcoma,soft-tissue sarcoma, leukemia, malignant lymphoma, multiple myeloma,skin cancer, brain tumor and mesothelioma.

For using the compound (I) of the present invention as a pharmaceuticalproduct, various dosage forms can be adopted according to the preventiveor therapeutic purpose by mixing, as appropriate, the compound (I) witha pharmaceutical carrier. The forms can be any of, for example, oralformulations, injections, suppositories, ointments and patches.Preferably, oral formulations are adopted. Each of these dosage formscan be produced by a general preparation method known by those skilledin the art.

Various organic or inorganic carrier substances generally used aspharmaceutical materials are used as such a pharmaceutical carrier.Solid preparations are formulated using an excipient, a binder, adisintegrant, a lubricant and a coloring agent, and liquid preparationsare formulated using a solvent, a solubilizer, a suspending agent, atonicity agent, a buffer, a soothing agent, and the like. Moreover,pharmaceutical additives such as antiseptics, antioxidants, coloringagents, sweeteners and stabilizers can also be used, if necessary.

When oral solid preparations are prepared, an excipient and anexcipient, a binder, a disintegrant, a lubricant, a coloring agent, acorrigent, or the like are added, as appropriate to the compound of thepresent invention, and then, tablets, coated tablets, granules, powders,capsules, or the like can be produced by a routine method.

When injection agents are prepared, a pH adjuster, a buffer, astabilizer, a tonicity agent, a local anesthetic, and the like are addedto the compound of the present invention, and hypodermic, intramuscularor intravenous injections can be produced by a routine method.

The amount of the compound of the present invention to be contained ineach of these unit dosage forms varies depending on the conditions of apatient to which this formulation should be applied, or depending on thedosage form or the like. The amount is generally preferablyapproximately 0.05 to 1000 mg for the oral formulation, approximately0.01 to 500 mg for the injection agent, and approximately 1 to 1000 mgfor the suppository, per unit dosage form.

Moreover, the daily dose of the drug having the dosage form differsdepending on the conditions, body weight, age, sex, or the like of apatient and cannot be generalized. The daily dose in adult (body weight:50 kg) can be usually approximately 0.05 to 5000 mg, preferably 0.1 to1000 mg, which is preferably administered in one portion or inapproximately two or three divided portions per day.

EXAMPLES

The present invention is specifically described with reference toExamples and Test Examples below, however these Examples are describedfor the purpose of exemplifications only and do not limit the scope ofthe present invention.

¹H-NMR spectra were measured using tetramethylsilane (TMS) as theinternal standard, and chemical shifts are shown in δ values (ppm). Thechemical shifts are each shown in parentheses by the number of protons,absorption pattern, and coupling constant (J value).

In the absorption patterns, the following symbols are used: s=singlet,d=doublet, t=triplet, q=quartet, dd=double doublet, ddd=double doubledoublet, dt=double triplet, m=multiplet, br=broad, and br s=broadsinglet.

In some structural formulae of compounds, the following symbols may beused: Me=methyl, Et=ethyl, tBu=tert-butyl, Ph=phenyl, Ac=acetyl,Boc=tert-butoxycarbonyl, TFA=trifluoroacetic acid, andMsOH=methanesulfonic acid.

Example 12-(Trans-4-hydroxycyclohexylamino)-4-{4-(quinolin-3-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(1) Example 1(1) 3-(Trifluoromethyl)-1H-pyrazolo[3,4-b]pyridine (1a)

Normal-butyllithium (a 2.6 M solution in hexane, 87.2 mL) was dropwiseadded to a solution of N,N-diisopropylamine (25.0 g) in tetrahydrofuran(hereinafter referred to as THF, 300 mL) under a nitrogen atmosphere at−5 to 0° C., and a solution of 2-fluoropyridine (25 g) in THF (50 mL)was dropwise added thereto at −78° C., followed by stirring for 1 hr.Subsequently, a solution of ethyl trifluoroacetate (47.6 g) in THF (50mL) was dropwise added to the reaction solution at −78° C., followed bystirring at the same temperature for 1 hr. Hydrazine monohydrate (41.3g) was added thereto, followed by stirring at 60° C. for 6 hr. Water(500 mL) was added to the reaction solution, followed by stirring at100° C. for 30 min. The precipitate was collected by filtration anddried under reduced pressure to obtain a compound (1a) (32.8 g, 85%) asa white solid.

¹H-NMR (DMSO-d₆) δ 14.64 (1H, brs), 8.73 (1H, d, J=4.3 Hz), 8.34 (1H, d,J=8.1 Hz), 7.43 (1H, dd, J=8.1, 4.3 Hz); LRMS (ESI) m/z 188 [M+H]⁺.

Example 1(2) 3-(Trifluoromethyl)-1H-pyrazolo[3,4-b]pyridine 7-oxide (1b)

Compound (1a) was dissolved in ethylene glycol dimethyl ether (100 mL)and heptane (200 mL), and m-chloroperoxybenzoic acid (33.9 g) was addedto the resulting solution at 0° C., followed by stirring at roomtemperature for 1 hr. The precipitate was collected by filtration toobtain compound (1b) (33.3 g, 96%) as a white solid.

¹H-NMR (DMSO-d₆) δ 8.53 (1H, d, J=6.1 Hz), 8.87 (1H, d, J=8.3 Hz), 7.36(1H, dd, J=8.3, 6.1 Hz); LRMS (ESI) m/z 204 [M+H]⁺.

Example 1(3) 4-Chloro-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridine(1c)

Phosphorus oxychloride (76.4 g) was gradually added to compound (1b)(33.2 g), followed by stirring at 100° C. for 1 hr. The reactionsolution was poured into ice water, and sodium hydroxide was addedthereto to adjust the pH to 10. The precipitate was collected byfiltration to obtain compound (1c) (9.76 g, 27%) as a light pink solid.

¹H-NMR (DMSO-d₆) δ 14.98 (1H, brs), 8.66 (1H, brd, J=4.9 Hz), 7.61 (1H,brd, J=4.9 Hz); LRMS (ESI) m/z 222 [M+H]⁺.

Example 1(4)3-{3-(Trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-4-yl}quinoline (1d)

A [1,1-bis-(diphenylphosphino)-ferrocene]dichloropalladium(II)dichloromethane complex (0.74 g) was added to a solution of compound(1c) (2.0 g), quinoline-3-boronic acid (2.5 g), and an aqueous sodiumcarbonate solution (1 M, 18 mL) in 1,4-dioxane (45 mL) under a nitrogenatmosphere, followed by stirring at 100° C. for 3 hr. The reactionsolution was distributed between ethyl acetate and water, and theorganic layer was washed with saturated saline and then dried overanhydrous sodium sulfate. After distillation of the solvent, the residuewas purified by neutral silica gel column chromatography(chloroform/methanol) to obtain compound (1d) (0.94 g, 33%) as a whitesolid.

¹H-NMR (DMSO-d₆) δ 14.89 (1H, brs), 9.00 (1H, d, J=2.0 Hz), 8.81 (1H, d,J=4.6 Hz), 8.54 (1H, d, J=2.0 Hz), 8.14 (1H, d, J=8.2 Hz), 8.08 (1H, d,J=8.2 Hz), 7.88 (1H, td, J=6.9, 1.5 Hz), 7.72 (1H, brt, J=6.9 Hz), 7.51(1H, d, J=4.6 Hz); LRMS (ESI) m/z 315 [M+H]⁺.

Example 1(5)2-Bromo-4-{4-(quinolin-3-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(1e)

Sodium hydride (0.183 g, a 55% dispersion in paraffin liquid) was addedto a solution of compound (1d) (0.940 g) in N,N-dimethylformamide(hereinafter referred to as DMF, 6 mL) at room temperature, followed bystirring for 30 min. Subsequently, 2-bromo-4-fluorobenzonitrile (0.838g) was added to the reaction solution, followed by stirring at 60° C.for 1 hr. After cooling, water was added to the reaction solution,followed by extraction with ethyl acetate. The organic layer was washedwith water and saturated saline in this order and was dried overanhydrous sodium sulfate. After distillation of the solvent, the residuewas purified by neutral silica gel column chromatography(chloroform/methanol) to obtain compound (1e) (0.56 g, 38%) as a whitesolid.

¹H-NMR (DMSO-d₆) δ 9.03-9.01 (2H, m), 8.89 (1H, d, J=1.8 Hz), 8.58-8.54(2H, m), 8.23 (1H, d, J=8.6 Hz), 8.16 (1H, d, J=8.4 Hz), 8.11 (1H, d,J=8.2 Hz), 7.91 (1H, brt, J=7.0 Hz), 7.76-7.71 (2H, m); LRMS (ESI) m/z494, 496 [M+H]⁺.

Example 1(6)2-(Trans-4-hydroxycyclohexylamino)-4-{4-(quinolin-3-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-yl}benzonitrile(1f)

A solution of a mixture of compound (1e) (0.560 g),trans-4-hydroxycyclohexylamine (0.522 g), sodium tert-butoxide (0.218g), palladium acetate (0.025 g), and1,1-bis-(diphenylphosphino)-ferrocene (0.126 g) in 1,4-dioxane (12 mL)was stirred under a nitrogen atmosphere at 140° C. for 2 hr. Thereaction solution was distributed between ethyl acetate and water, andthe organic layer was washed with saturated saline. The organic layerafter the washing was dried over anhydrous sodium sulfate, and then thesolvent was distilled away. The residue was purified by neutral silicagel column chromatography (chloroform/methanol) to obtain compound (1f)(0.450 g, 75%) as a white solid.

¹H-NMR (DMSO-d₆) δ 9.03 (1H, d, J=1.6 Hz), 8.95 (1H, d, J=4.8 Hz), 8.58(1H, d, J=2.1 Hz), 8.16 (1H, d, J=8.7 Hz), 8.10 (1H, d, J=7.3 Hz), 7.90(1H, td, J=6.9, 1.5 Hz), 7.86 (1H, d, J=2.0 Hz), 7.77-7.68 (3H, m), 7.53(1H, dd, J=8.6, 2.0 Hz), 4.59 (1H, d, J=4.6 Hz), 3.45 (1H, d, J=7.9 Hz),3.47-3.43 (1H, m), 3.30 (1H, brs), 2.03-1.98 (2H, m), 1.91-1.86 (2H, m),1.48-1.14 (4H, m); LRMS (ESI) m/z 529 [M+H]⁺.

Example 1(7)2-(Trans-4-hydroxycyclohexylamino)-4-{4-(quinolin-3-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(1)

Compound (1f) (0.450 g) was dissolved in dimethyl sulfoxide (hereinafterreferred to as DMSO, 2 mL) and ethanol (4 mL). An aqueous sodiumhydroxide solution (4 M, 0.851 mL) and a 30% hydrogen peroxide solution(0.193 mL) were added to the resulting solution in this order at roomtemperature, followed by stirring for 30 min. Water was added to thereaction solution, the reaction solution was distributed between ethylacetate and water, and the organic layer was washed with saturatedsaline. The organic layer after the washing was dried over anhydroussodium sulfate, and then the solvent was distilled away. The residue waspurified by neutral silica gel column chromatography(chloroform/methanol) to obtain compound (1) (0.300 g, 65%) as a whitesolid.

¹H-NMR (DMSO-d₆) δ 9.04 (1H, d, J=2.1 Hz), 8.94 (1H, d, J=4.6 Hz), 8.59(1H, d, J=2.0 Hz), 8.46 (1H, d, J=7.3 Hz), 8.16 (1H, d, J=8.4 Hz), 8.11(1H, d, J=7.1 Hz), 7.93-7.84 (3H, m), 7.77-7.65 (3H, m), 7.28 (1H, dd,J=8.6, 2.0 Hz), 7.27 (1H, brs), 4.58 (1H, d, J=4.3 Hz), 3.52 (1H, m),3.33 (1H, brs), 2.13-2.09 (2H, m), 1.90-1.85 (2H, m), 1.37-1.25 (4H, m);LRMS (ESI) m/z 547 [M+H]⁺.

Example 22-(Trans-4-hydroxycyclohexylamino)-4-{4-(quinolin-3-yl)-3-methyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(2) Example 2(1) 3-Methyl-1H-pyrazolo[3,4-b]pyridine (2a)

Normal-butyllithium (a 2.6 M solution in hexane, 87.0 mL) was dropwiseadded to a solution of N,N-diisopropylamine (11.2 mL) in THF (100 mL) at−78° C. under a nitrogen atmosphere, followed by increasing thetemperature to 0° C. Then, the solution was cooled to −78° C., and asolution of 2-fluoropyridine (6.2 g) in THF (100 mL) was dropwise addedthereto at −78° C., followed by stirring for 1 hr. Subsequently, asolution of N-methoxy-N-methylacetamide (8.46 mL) in THF (50 mL) wasdropwise added to the reaction solution at −78° C., and then hydrazinemonohydrate (31.9 mL) was added thereto, followed by stirring at 60° C.for 1 hr. After distillation of the solvent, water was added to theresidue, followed by extraction with ethyl acetate. The organic layerwas washed with saturated saline. The organic layer after the washingwas dried over anhydrous sodium sulfate, and then the solvent wasdistilled away to obtain compound (2a) (5.90 g, 69%) as a white solid.

¹H-NMR (DMSO-d₆) δ 8.08 (1H, dd, J=4.27, 1.71 Hz), 7.79 (1H, dd, J=7.81,1.71 Hz), 6.60 (1H, dd, J=7.81, 4.27 Hz), 2.44 (3H, s); LRMS (ESI) m/z134 [M+H]⁺.

Example 2(2) 3-Methyl-1H-pyrazolo[3,4-b]pyridine 7-oxide (2b)

According to Example 1(2), Compound (2b) (99%) was prepared as a whitesolid using compound (2a) instead of compound (1a). ¹H-NMR (DMSO-d₆) δ8.31 (1H, d, J=6.16 Hz), 7.79 (1H, dd, J=8.00 Hz), 7.71 (1H, dd, J=8.00,6.16 Hz), 2.49 (3H, s); LRMS (ESI) m/z 150 [M+H]⁺.

Example 2(3) 4-Chloro-3-methyl-1H-pyrazolo[3,4-b]pyridine (2c)

According to Example 1(3), compound (2c) (25%) was prepared as a whitesolid using compound (2b) instead of compound (1b).

¹H-NMR (DMSO-d₆) δ 8.41 (1H, d, J=5.00 Hz), 7.25 (1H, d, J=5.00 Hz),2.64 (3H, s); LRMS (ESI) m/z 168 [M+H]⁺.

Example 2(4)2-(Trans-4-hydroxycyclohexylamino)-4-{4-(quinolin-3-yl)-3-methyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(2d)

According to Example 1(4),3-{3-methyl-1H-pyrazolo[3,4-b]pyridin-4-yl}quinoline (17%) was preparedas a white solid using compound (2c) instead of compound (1c). Accordingto Example 1(5),2-bromo-4-{4-(quinolin-3-yl)-3-methyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrilewas prepared using 3-{3-methyl-1H-pyrazolo[3,4-b]pyridin-4-yl}quinolineinstead of compound (1d); and according to Example 1(6), compound (2d)(the second stage yield: 29%) was prepared as a white solid using2-bromo-4-{4-(quinolin-3-yl)-3-methyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrileinstead of compound (1e).

¹H-NMR (DMSO-d₆) δ 9.15 (1H, d, J=2.08 Hz), 8.96 (1H, d, J=1.71 Hz),8.85 (1H, d, J=4.88 Hz), 8.71 (1H, d, J=2.08 Hz), 8.65 (1H, dd, J=8.78,1.71 Hz), 8.17-8.12 (3H, m), 7.90 (1H, t, J=7.62 Hz), 7.75 (1H, t,J=7.62 Hz), 7.58 (1H, d, J=4.88 Hz), 2.29 (3H, s); LRMS (ESI) m/z 440[M+H]⁺.

Example 2(5)2-(Trans-4-hydroxycyclohexylamino)-4-{4-(quinolin-3-yl)-3-methyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(2)

According to Example 1(7), compound (2) (92%) was prepared as a whitesolid using compound (2d) instead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.16 (1H, s), 8.76 (1H, d, J=4.63 Hz), 8.71 (1H, s),8.45 (1H, d, J=7.32 Hz), 8.16 (2H, d, J=8.29 Hz), 7.90 (1H, t, J=7.56Hz) 7.87 (1H, brs), 7.85 (1H, s), 7.80-7.73 (2H, m), 7.56-7.46 (3H, m),7.14 (1H, brs), 4.59 (1H, d, J=4.39 Hz), 3.52 (1H, brs), 2.28 (3H, s),2.12 (2H, 2, J=10.2 Hz), 1.89 (2H, 2, J=10.2 Hz), 1.43-1.22 (4H, m);LRMS (ESI) m/z 493 [M+H]⁺.

Example 32-(Trans-4-hydroxycyclohexylamino)-4-{4-(quinolin-3-yl)-3-ethyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(3) Example 3(1) 3-Ethyl-1H-pyrazolo[3,4-b]pyridine (3a)

Normal-butyllithium (a 2.6 M solution in hexane, 87.0 mL) was dropwiseadded to a solution of N,N-diisopropylamine (23.0 g) in THF (200 mL) at−50° C. under a nitrogen atmosphere, followed by stirring for 10 min.Then, a solution of 2-fluoropyridine (20 g) in THF (100 mL) was dropwiseadded to the reaction solution at −78° C., followed by stirring for 1hr. Subsequently, a solution of propionaldehyde (15.6 g) in THF (100 mL)was dropwise added to the reaction solution at −78° C. The reactionsolution was warmed to room temperature and was poured in water (100mL), followed by extraction with ethyl acetate. The organic layer waswashed with saturated saline and then dried over anhydrous sodiumsulfate. The solvent was distilled away to obtain a colorless oilysubstance (32.0 g). Without performing purification, celite (28.5 g) andpyridinium chlorochromate (53.0 g) were added to a solution of thecolorless oily substance in dichloroethane (200 mL), followed bystirring at 40° C. for 2 hr. Pyridinium chlorochromate (13.0 g) wasfurther added to the reaction solution, followed by stirring at 40° C.for 2 hr. The reaction solution was filtrated using celite, and silicagel (300 g) was added to the filtrate, followed by stirring for 5 min,filtration, and elution with 200 mL of chloroform three times and 200 mLof ethyl acetate twice. The solvent was distilled away to obtain a brownoily substance (31.0 g). Without performing purification, hydrazinemonohydrate (25.0 mL) was added to a solution of the brown oilysubstance (31.0 g) in THF (52 mL), followed by stirring at 90° C. for 30min. After cooling, the reaction solution was distributed between ethylacetate and water. The organic layer was washed with saturated salineand was then dried over anhydrous sodium sulfate. Then, the solvent wasdistilled away to obtain compound (3a) (26.0 g, the third stage yield:86%) as a yellow oily substance.

¹H-NMR (CDCl₃) δ 11.45 (1H, brs), 8.57 (1H, dd, J=4.6, 1.5 Hz), 8.09(1H, dd, J=8.0, 1.5 Hz), 7.13 (1H, dd, J=8.0, 4.6 Hz), 3.03 (2H, q,J=7.6 Hz), 1.44 (3H, t, J=7.6 Hz); LRMS (ESI) m/z 148 [M+H]⁺.

Example 3(2) 3-Ethyl-1H-pyrazolo[3,4-b]pyridine 7-oxide (3b)

According to Example 1(2), compound (3b) (69%) was prepared as a whitesolid using compound (3a) instead of compound (1a).

¹H-NMR (DMSO-d₆) δ 14.02 (1H, brs), 8.32 (1H, d, J=6.1 Hz), 7.84 (1H, d,J=8.1 Hz), 7.11 (1H, dd, J=8.1, 6.1 Hz), 2.91 (2H, q, J=7.6 Hz), 1.29(3H, t, J=7.6 Hz); LRMS (ESI) m/z 164 [M+H]⁺.

Example 3(3) 4-Chloro-3-ethyl-1H-pyrazolo[3,4-b]pyridine (3c)

Phosphorus oxychloride (11.1 mL) was added to a suspension solution ofcompound (3b) (19.5 g) in dichloroethane (240 mL) at room temperature,followed by stirring for 30 min. The solvent of the reaction solutionwas distilled away, and then acetonitrile (40 mL), methanol (40 mL), andwater (80 mL) were added to the residue. After adjustment of pH to 9with an aqueous sodium hydroxide solution, water (400 mL) was addedthereto. The precipitate was collected by filtration, washed bysprinkling methanol (40 mL), water (300 mL), ether (60 mL), and hexane(30 mL), sequentially, and dried under reduced pressure to obtaincompound (3c) (10.2 g, 47%) as a white solid.

¹H-NMR (CDCl₃) δ 8.42 (1H, d, J=5.1 Hz), 7.13 (1H, d, J=5.1 Hz), 3.19(2H, q, J=7.6 Hz), 1.43 (3H, t, J=7.6 Hz); LRMS (ESI) m/z 182 [M+H]⁺.

Example 3(4)4-Chloro-1-(1-ethoxyethyl)-3-ethyl-1H-pyrazolo[3,4-b]pyridine (3d)

Ethyl vinyl ether (3.7 mL) and (+)-10-camphorsulfonic acid (0.162 g)were sequentially added to a solution of compound (3c) (2.36 g) in THF(13.0 mL), followed by stirring at 50° C. for 30 min. After cooling, thereaction solution was distributed between ethyl acetate and a saturatedaqueous sodium bicarbonate solution. The organic layer was washed withsaturated saline. The organic layer after the washing was dried overanhydrous sodium sulfate, and then the solvent was distilled away. Theresidue was purified by neutral silica gel column chromatography(n-hexane/ethyl acetate) to obtain compound (3d) (3.01 g, 91%) as anoily substance.

¹H-NMR (CDCl₃) δ 8.34 (1H, d, J=5.1 Hz), 7.09 (1H, d, J=5.1 Hz), 6.22(1H, q, J=6.1 Hz), 3.43-3.53 (1H, m), 3.11-3.26 (3H, m), 1.84 (3H, d,J=6.1 Hz), 1.40 (3H, t, J=7.6 Hz), 1.12 (3H, t, J=6.8 Hz); LRMS (ESI)m/z 254 [M+H]⁺.

Example 3(5) 3-(3-Ethyl-1H-pyrazolo[3,4-b]pyridin-4-yl)quinoline (3e)

Tetrakis(triphenylphosphine)palladium(0) (0.69 g) was added to asolution of compound (3d) (3.01 g), quinoline-3-boronic acid (2.67 g),and an aqueous sodium carbonate solution (2 M, 23 mL) in ethylene glycoldimethyl ether (30 mL) under a nitrogen atmosphere, followed by stirringat 85° C. for 25 hr. The reaction solution was distributed between ethylacetate and water. The organic layer was washed with saturated salineand then dried over anhydrous sodium sulfate. After distillation of thesolvent, 1,4-dioxane (23 mL) and 6 N hydrochloric acid (23 mL) wereadded to the residue, and the resulting mixture was stirred at roomtemperature for 90 min. The pH was adjusted to 7 with an aqueous sodiumhydroxide solution, followed by extraction with ethyl acetate. Theorganic layer was washed with saturated saline. The organic layer afterthe washing was dried over anhydrous sodium sulfate, and then thesolvent was distilled away. The residue was purified by neutral silicagel column chromatography (n-hexane/ethyl acetate) to obtain compound(3e) (0.942 g, the second stage yield: 29%) as a white solid.

¹H-NMR (CDCl₃) δ 11.64 (1H, brs), 9.09 (1H, d, J=2.2 Hz), 8.67 (1H, d,J=4.6 Hz), 8.31 (1H, d, J=2.2 Hz), 8.24 (1H, d, J=8.3 Hz), 7.95 (1H, d,J=7.8 Hz), 7.85 (1H, t, J=8.3 Hz), 7.68 (1H, t, J=7.8 Hz), 7.15 (1H, d,J=4.6 Hz), 2.69 (2H, q, J=7.6 Hz), 1.06 (3H, t, J=7.6 Hz); LRMS (ESI)m/z 275 [M+H]⁺.

Example 3(6)2-Bromo-4-{4-(quinolin-3-yl)-3-ethyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(3f)

According to Example 1(5), compound (3f) (84%) was prepared as a whitesolid using compound (3e) instead of compound (1d).

¹H-NMR (DMSO-d₆) δ 9.14 (1H, d, J=2.2 Hz), 8.99 (1H, d, J=2.2 Hz), 8.86(1H, d, J=4.9 Hz), 8.70 (1H, s), 8.66 (1H, d, J=8.8 Hz), 8.10-8.22 (3H,m), 7.91 (1H, t, J=8.3 Hz), 7.75 (1H, t, J=7.3 Hz), 7.56 (1H, d, J=4.9Hz), 2.67 (2H, q, J=7.6 Hz), 0.98 (3H, t, J=7.6 Hz); LRMS (ESI) m/z 454[M+H]⁺.

Example 3(7)2-(Trans-4-hydroxycyclohexylamino)-4-{4-(quinolin-3-yl)-3-ethyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(3)

According to Example 1(6), a crude product of2-(trans-4-hydroxycyclohexylamino)-4-{4-(quinolin-3-yl)-3-ethyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrilewas prepared using compound (3f) instead of compound (1e) and was usedin the subsequent reaction without being purified. According to Example1(7), compound (3) (the second stage yield: 49%) was prepared as a whitesolid by using2-(trans-4-hydroxycyclohexylamino)-4-{4-(quinolin-3-yl)-3-ethyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.14 (1H, d, J=2.2 Hz), 8.76 (1H, d, J=4.9 Hz), 8.69(1H, s), 8.44 (1H, d, J=7.1 Hz), 8.12-8.20 (2H, m), 7.41-7.94 (5H, m),7.49 (1H, d, J=8.8 Hz), 7.45 (1H, d, J=4.9 Hz), 7.14 (1H, brs), 4.58(1H, d, J=4.4 Hz), 3.30-3.60 (2H, m), 2.66 (2H, q, J=7.6 Hz), 1.80-2.20(4H, m), 1.21-1.50 (4H, m), 0.96 (3H, t, J=7.6 Hz); LRMS (ESI) m/z 507[M+H]⁺.

Example 42-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[4,3-c]pyridin-1-yl}benzamide(4) Example 4(1) 4-Chloro-3-isopropyl-1H-pyrazolo[4,3-c]pyridine (4a)

Normal-butyllithium (a 1.6 M solution in hexane, 8.13 mL) was dropwiseadded to a solution of N,N-diisopropylamine (1.99 mL) in THF (30 mL) at−78° C. under a nitrogen atmosphere, followed by increasing thetemperature to 0° C. Then, the solution was cooled to −78° C., and asolution of 2,4-dichloropyridine (1.0 g) in THF (3 mL) wad dropwiseadded thereto at −78° C., followed by stirring for 1.5 hr. Then, asolution of isobutylaldehyde (1.85 mL) in THF (3 mL) was dropwise addedto the reaction solution at −78° C., followed by stirring at the sametemperature for 30 min. Then, the reaction solution was poured into icewater and was extracted with ethyl acetate. The organic layer was washedwith saturated saline, and the organic layer after the washing was driedover anhydrous sodium sulfate. Then, the solvent was distilled away, andthe residue was purified by neutral silica gel column chromatography(n-hexane/ethyl acetate) to obtain1-(2,4-dichloropyridin-3-yl)-2-methylpropan-1-ol (1.48 g, 99%) as acolorless oily substance. A solution of DMSO (0.9 mL) in dichloromethane(5 mL) and a solution of1-(2,4-dichloropyridin-3-yl)-2-methylpropan-1-ol (1.39 g) indichloromethane (5 mL) were sequentially added to a solution of oxalylchloride (0.8 mL) in dichloromethane (30 mL) at −78° C., followed bystirring for 30 min. Then, triethylamine (3.52 mL) was added to thereaction solution at 0° C., followed by stirring for 1 hr. The reactionsolution was poured into ice water and was extracted with chloroform.The organic layer was washed with saturated saline. The organic layerafter the washing was dried over anhydrous sodium sulfate, and then thesolvent was distilled away. The residue was purified by neutral silicagel column chromatography (n-hexane/ethyl acetate) to obtain1-(2,4-dichloropyridin-3-yl)-2-methylpropan-1-one (1.18 g, 86%) as acolorless oily substance. Hydrazine monohydrate (1.3 mL) was added to asolution of 1-(2,4-dichloropyridin-3-yl)-2-methylpropan-1-one (0.93 g)in THF (13 mL), followed by stirring at room temperature for 12 hr andthen at 50° C. for 25 hr. The reaction solvent was distilled away underreduced pressure, and the residue was purified by neutral silica gelcolumn chromatography (n-hexane/ethyl acetate) to obtain compound (4a)(0.55 g, 66%) as a colorless oily substance.

¹H-NMR (DMSO-d₆) δ 8.06 (1H, d, J=5.73 Hz), 7.48 (1H, d, J=5.73 Hz),3.69 (1H, q, J=6.83 Hz), 1.35 (1H, d, J=6.83 Hz); LRMS (ESI) m/z 196[M+H]⁺.

Example 4(2) 3-{3-Isopropyl-1H-pyrazolo[4,3-c]pyridin-4-yl}quinoline(4b)

Dihydropyran (10.0 mL) and (+)-10-camphorsulfonic acid (0.062 g) weresequentially added to compound (4a) (0.55 g), followed by stirring at80° C. for 30 min. After cooling, the reaction solution was distributedbetween ethyl acetate and a saturated aqueous sodium bicarbonatesolution, and the organic layer was washed with saturated saline. Theorganic layer after the washing was dried over anhydrous sodium sulfate,and the solvent was distilled away. The residue was purified by neutralsilica gel column chromatography (n-hexane/ethyl acetate) to obtain4-chloro-3-isopropyl-1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazolo[4,3-c]pyridine(0.727 g, 93%) as a colorless oily substance. Subsequently,tetrakis(triphenylphosphine)palladium(0) (0.149 g) was added to asolution of the colorless oily substance (0.727 g), quinoline-3-boronicacid (0.539 g), and an aqueous sodium carbonate solution (1 M, 13 mL) inethylene glycol dimethyl ether (26 mL) under a nitrogen atmosphere at85° C. for 25 hr. The reaction solution was distributed between ethylacetate and water, and the organic layer was washed with saturatedsaline and then dried over anhydrous sodium sulfate. After distillationof the solvent, THF (5.2 mL) and concentrated hydrochloric acid (2.6 mL)were added to the residue, followed by stirring at 60° C. for 1 hr. ThepH was adjusted to 7 with an aqueous sodium bicarbonate solution,followed by extraction with ethyl acetate. The organic layer was washedwith saturated saline. The organic layer after the washing was driedover anhydrous sodium sulfate, and then the solvent was distilled away.The residue was purified by neutral silica gel column chromatography(n-hexane/ethyl acetate) to obtain compound (4b) (0.395 g, the thirdyield: 52%) as a white solid.

¹H-NMR (DMSO-d₆) δ 13.3 (1H, s), 9.14 (1H, d, J=2.10 Hz), 8.63 (1H, d,J=2.10 Hz), 8.43 (1H, d, J=5.85 Hz), 8.13 (1H, d, J=8.05 Hz), 8.12 (1H,d, J=8.05 Hz), 7.85 (1H, td, J=8.05, 1.22 Hz), 7.69 (1H, td, J=8.05,1.22 Hz), 7.55 (1H, d, J=5.85 Hz), 3.00 (1H, d, J=6.83 Hz), 1.01 (1H, d,J=6.83 Hz); LRMS (ESI) m/z 289 [M+H]⁺.

Example 4(3)2-Bromo-4-{4-(quinolin-3-yl)-3-isopropyl-1H-pyrazolo[4,3-c]pyridin-1-yl}benzonitrile(4c)

According to Example 1(5), compound (4c) (44%) was prepared as a whitesolid using compound (4b) instead of compound (1d).

¹H-NMR (DMSO-d₆) δ 9.18 (1H, d, J=1.95 Hz), 8.70 (1H, d, J=2.20 Hz),8.68 (1H, d, J=5.98 Hz), 8.31 (1H, d, J=1.95 Hz), 8.15-8.12 (4H, m),8.06 (1H, d, J=5.98 Hz), 7.88 (1H, t, J=7.31 Hz), 7.72 (1H, t, J=7.31Hz), 3.05 (1H, q, J=6.71 Hz), 1.07 (6H, d, J=6.71 Hz); LRMS (ESI) m/z468 [M+H]⁺.

Example 4(4)2-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[4,3-c]pyridin-1-yl}benzamide(4)

According to Example 1(6),2-(trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[4,3-c]pyridin-1-yl}benzonitrilewas prepared using compound (4c) instead of compound (1e) and was usedin the subsequent reaction without being purified. According to Example1(7), compound (4) (the second stage yield: 30%) was prepared as a whitesolid using2-(trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[4,3-c]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.19 (1H, d, J=1.95 Hz), 8.70 (1H, d, J=1.95 Hz),8.60 (1H, d, J=5.85 Hz), 8.48 (1H, d, J=7.56 Hz), 8.16 (1H, d, J=8.54Hz), 8.13 (1H, d, J=8.54 Hz), 7.92 (1H, brs), 7.87-7.84 (3H, m) 7.72(1H, t, J=7.44 Hz), 7.23 (1H, brs), 7.02 (1H, d, J=1.95 Hz), 6.90 (1H,dd, J=8.54, 1.95 Hz), 4.56 (1H, d, J=4.15 Hz), 3.49 (1H, brs), 3.05 (1H,q, J=6.83 Hz), 2.03 (1H, d, J=10.9 Hz), 1.84 (1H, d, J=10.9 Hz),1.37-1.20 (4H, m), 1.07 (1H, q, J=6.83 Hz); LRMS (ESI) m/z 521 [M+H]⁺.

Example 52-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-c]pyridin-1-yl}benzamide(5) Example 5(1)2-Bromo-4-{4-(quinolin-3-yl)-3-isopropyl-1H-pyrazolo[3,4-c]pyridin-1-yl}benzonitrile(5a)

According to Example 4(1),4-bromo-3-isopropyl-1H-pyrazolo[3,4-c]pyridine (the third stage yield:45%) was prepared as a white solid using 3,5-dibromo-pyridine instead of2,4-dichloropyridine. According to Example 4(2),3-{3-isopropyl-1H-pyrazolo[3,4-c]pyridin-4-yl}quinoline (the third stageyield: 66%) was prepared using4-bromo-3-isopropyl-1H-pyrazolo[3,4-c]pyridine instead of compound (4a).According to Example 1(5), compound (5a) (73%) was prepared as a whitesolid using 3-{3-isopropyl-1H-pyrazolo[3,4-c]pyridin-4-yl}quinolineinstead of compound (1d).

¹H-NMR (DMSO-d₆) δ 9.53 (1H, s), 9.11 (1H, d, J=1.71 Hz), 8.65 (1H, d,J=1.95 Hz), 8.46 (1H, s), 8.39 (1H, d, J=1.95 Hz), 8.17-8.14 (4H, m),7.88 (1H, t, J=7.50 Hz), 7.73 (1H, t, J=7.50 Hz), 2.94 (1H, q, J=6.95Hz), 1.06 (6H, d, J=6.95 Hz); LRMS (ESI) m/z 468 [M+H]⁺.

Example 5(2)2-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-c]pyridin-1-yl}benzamide(5)

According to Example 1(6),2-(trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-c]pyridin-1-yl}benzonitrilewas prepared using compound (5a) instead of compound (1e); and accordingto Example 1(7), compound (5) (the second stage yield: 41%) was preparedas a white solid using2-(trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-c]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.36 (1H, s), 9.11 (1H, d, J=1.71 Hz), 8.64 (1H, d,J=1.95 Hz), 8.49 (1H, d, J=7.32 Hz), 8.37 (1H, s), 8.15 (1H, d, J=8.29Hz), 8.12 (1H, d, J=8.29 Hz), 7.94-7.83 (3H, m), 7.72 (1H, t, J=7.56Hz), 7.23 (1H, brs), 7.09 (1H, s), 6.97 (1H, dd, J=8.29, 1.71 Hz), 4.56(1H, d, J=4.59 Hz), 3.52-3.38 (2H, m), 2.95 (1H, q, J=7.07 Hz), 2.04(2H, d, J=10.7 Hz), 1.84 (2H, d, J=10.7 Hz), 1.42-1.22 (4H, m), 1.06(6H, d, J=7.07 Hz); LRMS (ESI) m/z 521 [M+H]⁺.

Example 62-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(6) Example 6(1) 3-Isopropyl-1H-pyrazolo[3,4-b]pyridine 7-oxide (6a)

According to Example 3(1), 3-isopropyl-1H-pyrazolo[3,4-b]pyridine (thethird stage yield: 62%) was prepared as a yellow oily substance usingisobutyl aldehyde instead of propionaldehyde; and according to Example1(2), compound (6a) (81%) was prepared as a white solid using3-isopropyl-1H-pyrazolo[3,4-b]pyridine instead of compound (1a).

¹H-NMR (CDCl₃) δ 8.37 (1H, d, J=5.9 Hz), 7.80 (1H, d, J=8.3 Hz),7.05-7.15 (1H, m), 3.39 (1H, q, J=6.8 Hz), 1.45 (6H, d, J=6.8 Hz); LRMS(ESI) m/z 178 [M+H]⁺.

Example 6(2) 4-Chloro-3-isopropyl-1H-pyrazolo[3,4-b]pyridine (6b)

According to Example 1(3), compound (6b) (58%) was prepared as a whitesolid using compound (6a) instead of compound (1b).

¹H-NMR (DMSO-d₆) δ 8.41 (1H, d, J=4.88 Hz), 7.27 (1H, d, J=4.88 Hz),3.64 (1H, q, J=6.95 Hz), 1.37 (1H, d, J=6.95 Hz); LRMS (ESI) m/z 196[M+H]⁺.

Example 6(3) 3-{3-Isopropyl-1H-pyrazolo[3,4-b]pyridin-4-yl}quinoline(6c)

According to Example 1(4), compound (6c) (65%) was prepared as a whitesolid using compound (6b) instead of compound (1c).

¹H-NMR (DMSO-d₆) δ 13.5 (1H, s), 9.08 (1H, d, J=2.20 Hz), 8.62 (1H, d,J=2.20 Hz), 8.59 (1H, d, J=4.63 Hz), 8.15 (1H, d, J=9.39 Hz), 8.12 (1H,d, J=9.39 Hz), 7.88 (1H, td, J=7.60, 1.46 Hz), 7.73 (1H, t, J=7.60 Hz),7.21 (1H, d, J=4.63 Hz), 2.90 (1H, q, J=6.83 Hz), 1.00 (6H, d, J=6.83Hz); LRMS (ESI) m/z 289 [M+H]⁺.

Example 6(4)2-Bromo-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(6d)

According to Example 1(5), compound (6d) (59%) was prepared as a whitesolid using compound (6c) instead of compound (1d).

¹H-NMR (DMSO-d₆) δ 9.13 (1H, d, J=2.20 Hz), 8.99 (1H, d, J=1.71 Hz),8.85 (1H, d, J=4.88 Hz), 8.69 (1H, s), 8.65 (1H, dd, J=8.54, 1.95 Hz),8.18-8.12 (3H, m), 7.90 (1H, t, J=7.25 Hz), 7.74 (1H, t, J=7.25 Hz),7.53 (1H, d, J=4.88 Hz), 2.97 (1H, q, J=6.83 Hz), 1.05 (1H, d, J=6.83Hz); LRMS (ESI) m/z 468 [M+H]⁺.

Example 6(5)2-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(6)

According to Example 1(6),2-(trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrilewas prepared as a white solid using compound (6d) instead of compound(1e); and according to Example 1(7), compound (6) (the second stageyield: 62%) was prepared as a white solid using2-(trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.07 (1H, d, J=1.95 Hz), 8.69 (1H, d, J=4.88 Hz),8.63 (1H, s), 8.36 (1H, d, J=7.07 Hz), 8.11 (1H, d, J=9.64 Hz), 8.07(1H, d, J=9.64 Hz), 7.86-7.66 (5H, m), 7.42 (1H, dd, J=8.54, 1.71 Hz),7.36 (1H, d, J=4.63 Hz), 7.07 (1H, brs), 4.53 (1H, s), 3.46 (1H, brs),2.90 (1H, q, J=6.83 Hz), 2.06 (2H, d, J=11.4 Hz), 1.83 (2H, d, J=11.4Hz), 1.34-1.17 (4H, m), 0.99 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 521[M+H]⁺.

Example 72-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(pyridin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(7) Example 7(1)2-Bromo-4-{3-isopropyl-4-(pyridin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(7a)

According to Example 1(4), a crude product of3-isopropyl-4-(pyridin-3-yl)-1H-pyrazolo[3,4-b]pyridine was preparedusing compound (6b) instead of compound (1c) and usingpyridine-3-boronic acid instead of quinoline-3-boronic acid and was usedin the subsequent reaction without being purified. According to Example1(5), compound (7a) (the second stage yield: 60%) was prepared using3-isopropyl-4-(pyridin-3-yl)-1H-pyrazolo[3,4-b]pyridine instead ofcompound (1d).

¹H-NMR (DMSO-d₆) δ 8.96 (1H, d, J=2.14 Hz), 8.82-8.77 (3H, m), 8.63 (1H,dd, J=8.60, 2.14 Hz), 8.13 (1H, d, J=8.60 Hz), 8.09 (1H, dt, J=7.85,1.95 Hz), 7.63 (1H, dd, J=7.85, 4.76 Hz), 7.41 (1H, d, J=4.76 Hz), 2.95(1H, q, J=6.83 Hz), 1.08 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 418 [M+H]⁺.

Example 7(2)2-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(pyridin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(7)

According to Example 1(6), a crude product of2-(trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(pyridin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrilewas prepared using compound (7a) instead of compound (1e) and was usedin the subsequent reaction without being purified. According to Example1(7), compound (7) (the second stage yield: 79%) was prepared as a whitesolid using2-(trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(pyridin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 8.80 (1H, s), 8.76 (1H, d, J=4.39 Hz), 8.69 (1H, d,J=4.63 Hz), 8.40 (1H, d, J=6.83 Hz), 8.06 (1H, d, J=7.32 Hz), 7.84 (1H,s), 7.80 (1H, brs), 7.77 (1H, d, J=8.23 Hz), 7.65-7.45 (2H, m), 7.28(1H, d, J=4.39 Hz), 7.12 (1H, brs), 4.59 (1H, d, J=3.90 Hz), 3.51 (1H,m), 2.93 (1H, q, J=6.65 Hz), 2.10 (2H, d, J=10.5 Hz), 1.87 (2H, d,J=10.5 Hz), 1.42-1.22 (4H, m), 1.06 (6H, d, J=6.65 Hz); LRMS (ESI) m/z471 [M+H]⁺.

Example 82-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(pyridin-4-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(8) Example 8(1)2-Bromo-4-{3-isopropyl-4-(pyridin-4-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(8a)

According to Example 1(4), a crude product of3-isopropyl-4-(pyridin-4-yl)-1H-pyrazolo[3,4-b]pyridine was preparedusing compound (6b) instead of compound (1c) and usingpyridine-4-boronic acid instead of quinoline-3-boronic acid and was usedin the subsequent reaction without being purified. According to Example1(5), compound (8a) (the second stage yield: 62%) was prepared using3-isopropyl-4-(pyridin-4-yl)-1H-pyrazolo[3,4-b]pyridine instead ofcompound (1d).

¹H-NMR (DMSO-d₆) δ 8.92 (1H, d, J=1.22 Hz), 8.82 (1H, d, J=4.63 Hz),8.79 (1H, d, J=5.12 Hz), 8.63 (1H, dd, J=8.54, 1.22 Hz), 8.14 (1H, d,J=8.54 Hz), 7.66 (2H, d, J=5.12 Hz), 7.38 (1H, d, J=4.63 Hz), 2.99 (1H,q, J=6.58 Hz), 1.09 (6H, d, J=6.58 Hz); LRMS (ESI) m/z 418 [M+H]⁺.

Example 8(2)2-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(pyridin-4-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(8)

According to Example 1(6), a crude product of2-(trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(pyridin-4-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrilewas prepared using compound (8a) instead of compound (1e) and was usedin the subsequent reaction without being purified. According to Example1(7), compound (8) (the second stage yield: 58%) was prepared as a whitesolid using2-(trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(pyridin-4-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 8.77 (2H, d, J=5.85 Hz), 8.70 (1H, d, J=4.63 Hz),8.40 (1H, d, J=7.32 Hz), 7.83 (1H, d, J=1.71 Hz), 7.77 (1H, d, J=8.78Hz), 7.77 (1H, brs), 7.63 (2H, d, J=5.85 Hz), 7.44 (1H, dd, J=8.78, 1.71Hz), 7.25 (1H, d, J=4.63 Hz), 7.12 (1H, brs), 4.58 (1H, d, J=1.22 Hz),3.50 (1H, brs), 2.96 (1H, q, J=6.83 Hz), 2.10 (2H, d, J=10.6 Hz), 1.87(2H, d, J=10.6 Hz), 1.42-1.22 (4H, m), 1.07 (6H, d, J=6.83 Hz); LRMS(ESI) m/z 471 [M+H]⁺.

Example 92-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(benzofuran-2-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(9) Example 9(1)2-Bromo-4-{3-isopropyl-4-(benzofuran-2-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(9a)

According to Example 1(4), a crude product of3-isopropyl-4-(benzofuran-2-yl)-1H-pyrazolo[3,4-b]pyridine was preparedusing compound (6b) instead of compound (1c) and usingbenzofuran-2-boronic acid instead of quinoline-3-boronic acid and wasused in the subsequent reaction without being purified. According toExample 1(5), compound (9a) (the second stage yield: 25%) was preparedusing 3-isopropyl-4-(benzofuran-2-yl)-1H-pyrazolo[3,4-b]pyridine insteadof compound (1d).

¹H-NMR (DMSO-d₆) δ 8.96 (1H, d, J=2.00 Hz), 8.81 (1H, d, J=4.88 Hz),8.62 (1H, dd, J=8.72, 2.00 Hz), 8.14 (1H, d, J=8.71 Hz), 7.83 (1H, d,J=7.56 Hz), 7.80-7.73 (3H, m), 7.48 (1H, t, J=7.31 Hz), 3.83 (1H, q,J=6.59 Hz), 1.29 (6H, d, J=6.59 Hz); LRMS (ESI) m/z 457 [M+H]⁺.

Example 9(2)2-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(benzofuran-2-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(9)

According to Example 1(6), a crude product of2-(trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(benzofuran-2-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrilewas prepared using compound (9a) instead of compound (1e) and was usedin the subsequent reaction without being purified. According to Example1(7), compound (9) (the second stage yield: 46%) was prepared as a whitesolid using2-(trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(benzofuran-2-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 8.73 (1H, d, J=4.88 Hz), 8.43 (1H, d, J=7.07 Hz),7.86-7.76 (5H, m), 7.69 (2H, s), 7.48-7.46 (2H, m), 7.39 (1H, t, J=7.44Hz), 7.15 (1H, brs), 4.60 (1H, s), 3.80 (1H, q, J=6.83 Hz), 3.52 (1H,brs), 2.13 (2H, d, J=10.0 Hz), 1.90 (2H, d, J=10.0 Hz), 1.41-1.24 (10H,m); LRMS (ESI) m/z 510 [M+H]⁺.

Example 102-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(furan-2-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(10) Example 10(1)2-Bromo-4-{3-isopropyl-4-(furan-2-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(10a)

According to Example 1(4), a crude product of3-isopropyl-4-(furan-2-yl)-1H-pyrazolo[3,4-b]pyridine was prepared usingcompound (6b) instead of compound (1c) and using furan-2-boronic acidinstead of quinoline-3-boronic acid and was used in the subsequentreaction without being purified. According to Example 1(5), compound(10a) (the second stage yield: 40%) was prepared using3-isopropyl-4-(furan-2-yl)-1H-pyrazolo[3,4-b]pyridine instead ofcompound (1d).

¹H-NMR (DMSO-d₆) δ 8.95 (1H, d, J=2.08 Hz), 8.71 (1H, d, J=5.00 Hz),8.60 (1H, dd, J=8.78, 2.08 Hz), 8.12 (1H, d, J=8.78 Hz), 8.10 (1H, d,J=1.71 Hz), 7.60 (1H, d, J=5.00 Hz), 7.31 (1H, d, J=3.42 Hz), 6.82 (1H,dd, J=3.42, 1.71 Hz), 3.80 (1H, q, J=6.83 Hz), 1.26 (6H, d, J=6.83 Hz);LRMS (ESI) m/z 407 [M+H]⁺.

Example 10(2)2-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(furan-2-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(10)

According to Example 1(6), a crude product of2-(trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(furan-2-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrilewas prepared using compound (10a) instead of compound (1e) and was usedin the subsequent reaction without being purified. According to Example1(7), compound (10) (the second stage yield: 59%) was prepared as awhite solid using2-(trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(furan-2-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 8.62 (1H, d, J=4.75 Hz), 8.40 (1H, d, J=7.07 Hz),8.07 (1H, s), 7.83 (1H, s), 7.83 (1H, brs), 7.75 (1H, d, J=8.53 Hz),7.49 (1H, d, J=4.75 Hz), 7.45 (1H, d, J=8.53 Hz), 7.24 (1H, d, J=2.93Hz), 7.12 (1H, brs), 6.79 (1H, d, J=2.93 Hz), 4.59 (1H, d, J=3.66 Hz),3.76 (1H, q, J=6.59 Hz), 3.50 (1H, brs), 2.10 (2H, d, J=10.5 Hz), 1.87(2H, d, J=10.5 Hz), 1.32-1.30 (10H, m); LRMS (ESI) m/z 460 [M+H]⁺.

Example 112-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(5-methoxypyridin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(11) Example 11(1)2-Bromo-4-{3-isopropyl-4-(5-methoxypyridin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(11a)

According to Example 1(4), a crude product of3-isopropyl-4-(5-methoxypyridin-3-yl)-1H-pyrazolo[3,4-b]pyridine wasprepared using compound (6b) instead of compound (1c) and using5-methoxypyridine-3-boronic acid pinacol ester instead ofquinoline-3-boronic acid and was used in the subsequent reaction withoutbeing purified. According to Example 1(5), compound (11a) (the secondstage yield: 45%) was prepared using3-isopropyl-4-(5-methoxypyridin-3-yl)-1H-pyrazolo[3,4-b]pyridine insteadof compound (1d).

¹H-NMR (DMSO-d₆) δ 8.97 (1H, d, J=1.77 Hz), 8.80 (1H, d, J=4.63 Hz),8.63 (1H, dd, J=8.72, 1.77 Hz), 8.50 (1H, d, J=2.68 Hz), 8.39 (1H, s),8.13 (1H, d, J=8.72 Hz), 7.70 (1H, s), 7.42 (1H, d, J=4.63 Hz), 3.91(3H, s), 2.99 (1H, q, J=6.96 Hz), 1.12 (1H, d, J=6.96 Hz); LRMS (ESI)m/z 448 [M+H]⁺.

Example 11(2)2-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(5-methoxypyridin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(11)

According to Example 1(6), a crude product of2-(trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(5-methoxypyridin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrilewas prepared using compound (11a) instead of compound (1e) and was usedin the subsequent reaction without being purified. According to Example1(7), compound (11) (the second stage yield: 38%) was prepared as awhite solid using2-(trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(5-methoxypyridin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 8.71 (1H, d, J=4.63 Hz), 8.49 (1H, d, J=2.80 Hz),8.42 (1H, d, J=7.07 Hz), 8.39 (1H, d, J=1.89 Hz), 7.85 (1H, d, J=1.95Hz), 7.83 (1H, brs), 7.78 (1H, d, J=8.60 Hz), 7.69 (1H, dd, J=2.80, 1.95Hz), 7.46 (1H, dd, J=8.60, 1.89 Hz), 7.31 (1H, d, J=4.63 Hz), 7.14 (1H,brs), 4.59 (1H, d, J=4.15 Hz), 3.91 (3H, s), 3.52 (1H, brs), 2.98 (1H,q, J=6.83 Hz), 2.12 (2H, d, J=10.9 Hz), 1.89 (2H, d, J=10.9 Hz),1.41-1.22 (4H, m), 1.11 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 501 [M+H]⁺.

Example 122-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(1-methyl-1H-indol-5-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(12) Example 12(1)2-Bromo-4-{3-isopropyl-4-(1-methyl-1H-indol-5-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(12a)

According to Example 1(4), a crude product of3-isopropyl-4-(1-methyl-1H-indol-5-yl)-1H-pyrazolo[3,4-b]pyridine wasprepared using compound (6b) instead of compound (1c) and using1-methylindole-5-boronic acid pinacol ester instead ofquinoline-3-boronic acid and was used in the subsequent reaction withoutbeing purified. According to Example 1(5), compound (12a) (the secondstage yield: 90%) was prepared using3-isopropyl-4-(1-methyl-1H-indol-5-yl)-1H-pyrazolo[3,4-b]pyridineinstead of compound (1d).

¹H-NMR (DMSO-d₆) δ 8.97 (1H, d, J=1.95 Hz), 8.69 (1H, d, J=4.88 Hz),8.64 (1H, dd, J=8.66, 1.95 Hz), 8.10 (1H, d, J=8.66 Hz), 7.74 (1H, s),7.61 (1H, d, J=8.29 Hz), 7.45 (1H, d, J=3.05 Hz), 7.33 (1H, d, J=8.29Hz), 7.31 (1H, d, J=4.88 Hz), 6.54 (1H, d, J=3.05 Hz), 3.87 (3H, s),3.12 (1H, t, J=6.83 Hz), 1.03 (1H, d, J=6.83 Hz); LRMS (ESI) m/z 470[M+H]⁺.

Example 12(2)2-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(1-methyl-1H-indol-5-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(12)

According to Example 1(6), a crude product of2-(trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(1-methyl-1H-indol-5-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrilewas prepared using compound (12a) instead of compound (1e) and was usedin the subsequent reaction without being purified. According to Example1(7), compound (12) (the second stage yield: 58%) was prepared as awhite solid using2-(trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(1-methyl-1H-indol-5-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 8.62 (1H, d, J=4.63 Hz), 8.42 (1H, d, J=7.32 Hz),7.91 (1H, d, J=1.77 Hz), 7.80 (1H, brs), 7.78 (1H, d, J=8.72 Hz), 7.75(1H, d, J=1.40 Hz), 7.62 (1H, d, J=8.48 Hz), 7.49 (1H, dd, J=8.72, 1.77Hz), 7.45 (1H, d, J=2.93 Hz), 7.35 (1H, dd, J=8.48, 1.40 Hz), 7.22 (1H,d, J=4.63 Hz), 7.12 (1H, brs), 6.55 (1H, d, J=2.93 Hz), 4.58 (1H, d,J=4.15 Hz), 3.88 (3H, s), 3.52 (1H, brs), 3.12 (1H, q, J=6.83 Hz), 2.13(2H, d, J=11.5 Hz), 1.89 (2H, d, J=11.5 Hz), 1.41-1.22 (4H, m), 1.04(6H, d, J=6.83 Hz); LRMS (ESI) m/z 523 [M+H]⁺.

Example 132-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(1H-pyrrolo[2,3-b]pyridin-5-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(13) Example 13(1)2-Bromo-4-{3-isopropyl-4-{1-[(2-(trimethylsilyl)ethoxy)methyl]-1H-pyrrolo[2,3-b]pyridin-5-yl}-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(13a)

According to Example 1(4), a crude product of3-isopropyl-4-{1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrrolo[2,3-b]pyridin-5-yl}-1H-pyrazolo[3,4-b]pyridinewas prepared using compound (6b) instead of compound (1c) and using1-(2-trimethylsilylethoxymethyl)-1H-pyrrolo[2,3-b]pyridine 5-boronicacid pinacol ester instead of quinoline-3-boronic acid and was used inthe subsequent reaction without being purified. According to Example1(5), compound (13a) (the second stage yield: 58%) was prepared using3-isopropyl-4-{1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrrolo[2,3-b]pyridin-5-yl}-1H-pyrazolo[3,4-b]pyridineinstead of compound (1d).

¹H-NMR (DMSO-d₆) δ 9.09 (1H, d, J=1.95 Hz), 8.88 (1H, d, J=4.88 Hz),8.76 (1H, dd, J=8.72, 1.95 Hz), 8.59 (1H, d, J=1.95 Hz), 8.37 (1H, d,J=1.95 Hz), 8.24 (1H, d, J=8.72 Hz), 7.90 (1H, d, J=3.54 Hz), 7.51 (1H,d, J=4.88 Hz), 6.79 (1H, d, J=3.54 Hz), 5.82 (2H, s), 3.67 (2H, t,J=7.99 Hz), 3.13 (1H, d, J=6.83 Hz), 1.15 (6H, d, J=6.83 Hz), 0.95 (2H,d, J=7.99 Hz), 0.00 (9H, s); LRMS (ESI) m/z 587 [M+H]⁺.

Example 13(2)2-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-{1-[(2-(trimethylsilyl)ethoxy)methyl]-1H-pyrrolo[2,3-b]pyridin-5-yl}-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(13b)

According to Example 1(6), a crude product of2-(trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-{1-[(2-(trimethylsilyl)ethoxy)methyl]-1H-pyrrolo[2,3-b]pyridin-5-yl}-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrilewas prepared using compound (13a) instead of compound (1e) and was usedin the subsequent reaction without being purified. According to Example1(7), compound (13b) (the second stage yield: 55%) was prepared as awhite solid using2-(trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-{1-[(2-(trimethylsilyl)ethoxy)methyl]-1H-pyrrolo[2,3-b]pyridin-5-yl}-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 8.78 (1H, d, J=4.63 Hz), 8.59 (1H, d, J=1.71 Hz),8.52 (1H, d, J=7.07 Hz), 8.36 (1H, d, J=1.95 Hz), 7.98 (1H, s), 7.93(1H, brs), 7.85-7.76 (2H, m), 7.58 (1H, dd, J=8.54, 1.71 Hz), 7.39 (1H,d, J=4.63 Hz), 7.22 (1H, brs), 6.78 (1H, d, J=3.66 Hz), 5.82 (2H, s),4.68 (1H, d, J=4.15 Hz), 3.67 (2H, d, J=8.05 Hz), 3.61 (1H, brs), 3.11(1H, q, J=6.83 Hz), 2.22 (2H, d, J=10.49 Hz), 1.99 (2H, d, J=10.49 Hz),1.51-1.33 (4H, m), 1.14 (6H, d, J=6.83 Hz), 0.95 (2H, d, J=8.05 Hz),0.00 (9H, s); LRMS (ESI) m/z 640 [M+H]⁺.

Example 13(3)2-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(1H-pyrrolo[2,3-b]pyridin-5-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(13)

Hydrochloric acid (a 6.0 M solution in water, 0.78 mL) was added to asolution of compound (13b) (0.100 g) in THF (0.78 mL), followed bystirring at 50° C. for 12 hr. The pH was adjusted to 10 with an aqueoussodium hydroxide solution, followed by extraction with ethyl acetate.The organic layer was washed with saturated saline. The organic layerafter the washing was dried over anhydrous sodium sulfate, and then thesolvent was distilled away. Chloroform and ether were added to theresidue, and the precipitate was collected by filtration to obtaincompound (13) (0.057 g, 71%) as a white solid.

¹H-NMR (DMSO-d₆) δ 11.9 (1H, s), 8.67 (1H, d, J=4.63 Hz), 8.44-8.41 (2H,m), 8.20 (1H, d, J=1.95 Hz), 7.90 (1H, d, J=2.20 Hz), 7.84 (1H, brs),7.78 (1H, d, J=8.54 Hz), 7.62 (1H, d, J=3.18 Hz), 7.48 (1H, dd, J=8.54,2.20 Hz), 7.29 (1H, d, J=4.63 Hz), 7.14 (1H, brs), 6.59 (1H, dd, J=3.18,1.95 Hz), 4.59 (1H, d, J=4.39 Hz), 3.53 (1H, brs), 3.03 (1H, q, J=6.83Hz), 2.12 (2H, d, J=10.9 Hz), 1.89 (2H, d, J=10.9 Hz), 1.42-1.22 (4H,m), 1.06 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 510 [M+H]⁺.

Example 142-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(1-methyl-1H-pyrrolo[2,3-b]pyridin-5-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(14) Example 14(1)2-Bromo-4-{3-isopropyl-4-(1-methyl-1H-pyrrolo[2,3-b]pyridin-5-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(14a)

According to Example 1(4), a crude product of3-isopropyl-4-(1-methyl-1H-pyrrolo[2,3-b]pyridin-5-yl)-1H-pyrazolo[3,4-b]pyridinewas prepared using compound (6b) instead of compound (1c) and using1-methyl-1H-pyrrolo[2,3-b]pyridine-5-boronic acid instead ofquinoline-3-boronic acid and was used in the subsequent reaction withoutbeing purified. According to Example 1(5), compound (14a) (the secondstage yield: 34%) was prepared using3-isopropyl-4-(1-methyl-1H-pyrrolo[2,3-b]pyridin-5-yl)-1H-pyrazolo[3,4-b]pyridineinstead of compound (1d).

¹H-NMR (DMSO-d₆) δ 9.00 (1H, d, J=1.22 Hz), 8.77 (1H, d, J=4.88 Hz),8.66 (1H, dd, J=8.72, 1.40 Hz), 8.47 (1H, d, J=1.40 Hz), 8.24 (1H, d,J=1.22 Hz), 8.15 (1H, d, J=8.72 Hz), 7.68 (1H, d, J=3.30 Hz), 7.40 (1H,d, J=4.88 Hz), 6.61 (1H, d, J=3.30 Hz), 3.92 (3H, s), 3.04 (1H, q,J=6.58 Hz), 1.06 (1H, d, J=6.58 Hz); LRMS (ESI) m/z 471 [M+H]⁺.

Example 14(2)2-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(1-methyl-1H-pyrrolo[2,3-b]pyridin-5-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(14)

According to Example 1(6), a crude product of2-(trans-4-hydroxycyclohexylamino)-4-(1-methyl-1H-pyrrolo[2,3-b]pyridin-5-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrilewas prepared using compound (14a) instead of compound (1e) and was usedin the subsequent reaction without being purified. According to Example1(7), compound (14) (the second stage yield: 30%) was prepared as awhite solid using2-(trans-4-hydroxycyclohexylamino)-4-(1-methyl-1H-pyrrolo[2,3-b]pyridin-5-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 8.66 (1H, d, J=4.63 Hz), 8.45 (1H, d, J=1.95 Hz),8.41 (1H, d, J=7.07 Hz), 8.21 (1H, d, J=1.95 Hz), 7.87 (1H, d, J=1.71Hz), 7.82 (1H, brs), 7.77 (1H, d, J=8.78 Hz), 7.65 (1H, d, J=3.42 Hz),7.47 (1H, dd, J=8.78, 1.71 Hz), 7.27 (1H, d, J=4.63 Hz), 7.11 (1H, brs),6.59 (1H, d, J=3.42 Hz), 4.59 (1H, d, J=3.90 Hz), 3.91 (3H, s), 3.50(1H, brs), 3.01 (1H, q, J=6.83 Hz), 2.11 (2H, d, J=10.7 Hz), 1.88 (2H,d, J=10.7 Hz), 1.42-1.22 (4H, m), 1.04 (6H, d, J=6.83 Hz); LRMS (ESI)m/z 524 [M+H]⁺.

Example 152-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(1-methoxymethyl-1H-pyrrolo[2,3-b]pyridin-5-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(15) Example 15(1)2-Bromo-4-{3-isopropyl-4-(1-methoxymethyl-1H-pyrrolo[2,3-b]pyridin-5-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(15a)

According to Example 1(4), a crude product of3-isopropyl-4-(1-methoxymethyl-1H-pyrrolo[2,3-b]pyridin-5-yl)-1H-pyrazolo[3,4-b]pyridinewas prepared using compound (6b) instead of compound (1c) and using1-methoxymethyl-1H-pyrrolo[2,3-b]pyridine-5-boronic acid instead ofquinoline-3-boronic acid and was used in the subsequent reaction withoutbeing purified. According to Example 1(5), compound (15a) (the secondstage yield: 40%) was prepared using3-isopropyl-4-(1-methoxymethyl-1H-pyrrolo[2,3-b]pyridin-5-yl)-1H-pyrazolo[3,4-b]pyridineinstead of compound (1d).

¹H-NMR (DMSO-d₆) δ 9.00 (1H, d, J=2.07 Hz), 8.78 (1H, d, J=4.82 Hz),8.66 (1H, d, J=8.78 Hz), 8.50 (1H, d, J=2.07 Hz), 8.29 (1H, d, J=2.07Hz), 8.15 (1H, d, J=8.78 Hz), 7.82 (1H, d, J=3.60 Hz), 7.43 (1H, d,J=4.82 Hz), 6.70 (1H, d, J=3.60 Hz), 5.69 (2H, s), 3.27 (3H, s), 3.03(1H, q, J=6.83 Hz), 1.05 (1H, d, J=6.83 Hz); LRMS (ESI) m/z 501 [M+H]⁺.

Example 15(2)2-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(1-methoxymethyl-1H-pyrrolo[2,3-b]pyridin-5-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(15)

According to Example 1(6), a crude product of2-(trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(1-methoxymethyl-1H-pyrrolo[2,3-b]pyridin-5-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrilewas prepared using compound (15a) instead of compound (1e) and was usedin the subsequent reaction without being purified. According to Example1(7), compound (15) (the second stage yield: 45%) was prepared as awhite solid using2-(trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(1-methoxymethyl-1H-pyrrolo[2,3-b]pyridin-5-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 8.67 (1H, d, J=4.63 Hz), 8.48 (1H, d, J=1.46 Hz),8.41 (1H, d, J=6.83 Hz), 8.26 (1H, d, J=1.46 Hz), 7.87 (1H, s),7.84-7.78 (3H, m), 7.47 (1H, dd, J=8.78, 1.22 Hz), 7.30 (1H, d, J=4.63Hz), 7.12 (1H, brs), 6.68 (1H, d, J=3.66 Hz), 5.68 (2H, s), 4.59 (1H, d,J=2.93 Hz), 3.50 (1H, brs), 3.26 (3H, s), 3.00 (1H, q, J=6.83 Hz), 2.11(2H, d, J=11.7 Hz), 1.88 (2H, d, J=10.9 Hz), 1.42-1.22 (4H, m), 1.03(6H, d, J=6.83 Hz); LRMS (ESI) m/z 554 [M+H]⁺.

Example 164-{4-(1-Benzyl-1H-pyrazol-4-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(trans-4-hydroxycyclohexylamino)benzamide(16) Example 16(1)4-{4-(1-Benzyl-1H-pyrazol-4-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-bromo-benzonitrile(16a)

According to Example 1(4), a crude product of4-(1-benzyl-1H-pyrazol-4-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridine wasprepared using compound (6b) instead of compound (1c) and using1-benzyl-1H-pyrazol-4-yl-boronic acid pinacol ester instead ofquinoline-3-boronic acid and was used in the subsequent reaction withoutbeing purified. According to Example 1(5), compound (16a) (the secondstage yield: 52%) was prepared using4-(1-benzyl-1H-pyrazol-4-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridineinstead of compound (1d).

¹H-NMR (DMSO-d₆) δ 8.94-8.98 (1H, m), 8.67 (1H, dd, J=4.9, 1.0 Hz),8.58-8.65 (1H, m), 8.37 (1H, s), 8.11 (1H, dd, J=8.6, 1.2 Hz), 7.89 (1H,s), 7.28-7.44 (6H, m), 5.47 (2H, s), 3.35 (1H, q, J=6.8 Hz), 1.13 (6H,d, J=6.8 Hz); LRMS (ESI) m/z 497 [M+H]⁺.

Example 16(2)4-{4-(1-Benzyl-1H-pyrazol-4-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(trans-4-hydroxycyclohexylamino)benzonitrile(16b)

According to Example 1(6), compound (16b) (71%) was prepared usingcompound (16a) instead of compound (1e).

¹H-NMR (DMSO-d₆) δ 8.59 (1H, d, J=4.9 Hz), 8.35 (1H, s), 8.03 (1H, d,J=1.9 Hz), 7.88 (1H, s), 7.69 (1H, dd, J=8.6, 1.9 Hz), 7.62 (1H, d,J=8.6 Hz), 7.29-7.43 (5H, m), 7.25 (1H, d, J=4.9 Hz), 5.83 (1H, d, J=7.8Hz), 5.47 (2H, s), 4.60 (1H, d, J=4.4 Hz), 3.30-3.52 (3H, m), 1.80-2.20(4H, m), 1.20-1.50 (4H, m), 1.12 (6H, d, J=6.8 Hz); LRMS (ESI) m/z 532[M+H]⁺.

Example 16(3)4-{4-(1-Benzyl-1H-pyrazol-4-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(trans-4-hydroxycyclohexylamino)benzamide(16)

According to Example 1(7), compound (16) (82%) was prepared as a whitesolid using compound (16b) instead of compound (1f).

¹H-NMR (DMSO-d₆) δ 8.57 (1H, d, J=4.6 Hz), 8.40 (1H, d, J=7.3 Hz), 8.34(1H, s), 7.85-7.90 (2H, m), 7.80 (1H, brs), 7.76 (1H, d, J=8.8 Hz), 7.46(1H, dd, J=8.8, 2.0 Hz), 7.28-7.43 (5H, m), 7.21 (1H, d, J=4.6 Hz), 7.12(1H, brs), 5.47 (2H, s), 4.58 (1H, d, J=4.4 Hz), 3.30-3.60 (3H, m),1.80-2.20 (4H, m), 1.20-1.45 (4H, m), 1.13 (6H, d, J=6.8 Hz); LRMS (ESI)m/z 550 [M+H]⁺.

Example 172-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(thiophen-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(17) Example 17(1)2-Bromo-4-{3-isopropyl-4-(thiophen-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(17a)

According to Example 1(4), a crude product of3-isopropyl-4-(thiophen-3-yl)-1H-pyrazolo[3,4-b]pyridine was preparedusing compound (6b) instead of compound (1c) and usingthiophen-3-yl-boronic acid instead of quinoline-3-boronic acid and wasused in the subsequent reaction without being purified. According toExample 1(5), compound (17a) (the second stage yield: 52%) was preparedusing 3-isopropyl-4-(thiophen-3-yl)-1H-pyrazolo[3,4-b]pyridine insteadof compound (1d).

¹H-NMR (DMSO-d₆) δ 8.97 (1H, s), 8.60-8.75 (2H, m), 7.78-8.17 (3H, m),7.44 (1H, d, J=4.9 Hz), 7.35 (1H, d, J=4.9 Hz), 3.24 (1H, q, J=6.8 Hz),1.13 (6H, d, J=6.8 Hz); LRMS (ESI) m/z 423 [M+H]⁺.

Example 17(2)2-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(thiophen-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(17b)

According to Example 1(6), compound (17b) (61%) was prepared usingcompound (17a) instead of compound (1e).

¹H-NMR (DMSO-d₆) 8.64 (1H, d, J=4.6 Hz), 8.02 (1H, d, J=2.0 Hz), 7.91(1H, dd, J=3.0, 1.4 Hz), 7.80 (1H, dd, J=4.9, 3.0 Hz), 7.70 (1H, dd,J=8.6, 2.0 Hz), 7.62 (1H, d, J=8.6 Hz), 7.43 (1H, dd, J=4.9, 1.4 Hz),7.28 (1H, d, J=4.6 Hz), 5.84 (1H, d, J=7.6 Hz), 4.61 (1H, d, J=4.4 Hz),3.30-3.52 (2H, m), 3.22 (1H, q, J=6.8 Hz), 1.80-2.20 (4H, m), 1.20-1.50(4H, m), 1.11 (6H, d, J=6.8 Hz); LRMS (ESI) m/z 458 [M+H]⁺.

Example 17(3)2-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(thiophen-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(17)

According to Example 1(7), compound (17) (89%) was prepared as a whitesolid using compound (17b) instead of compound (1f).

¹H-NMR (DMSO-d₆) 8.63 (1H, d, J=4.6 Hz), 8.41 (1H, d, J=7.3 Hz), 7.90(1H, dd, J=3.0, 1.2 Hz), 7.86 (1H, d, J=2.2 Hz), 7.74-7.82 (3H, m), 7.46(1H, dd, J=8.5, 2.2 Hz), 7.43 (1H, dd, J=4.9, 1.2 Hz), 7.24 (1H, d,J=4.6 Hz), 7.12 (1H, brs), 4.58 (1H, d, J=4.2 Hz), 3.30-3.60 (2H, m),3.22 (1H, q, J=6.8 Hz), 1.80-2.20 (4H, m), 1.20-1.45 (4H, m), 1.12 (6H,d, J=6.8 Hz); LRMS (ESI) m/z 476 [M+H]⁺.

Example 182-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(6-methoxypyridin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(18) Example 18(1)2-Bromo-4-{3-isopropyl-4-(6-methoxypyridin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(18a)

According to Example 1(4), a crude product of3-isopropyl-4-(6-methoxypyridin-3-yl)-1H-pyrazolo[3,4-b]pyridine wasprepared using compound (6b) instead of compound (1c) and using6-methoxypyridin-3-yl-boronic acid instead of quinoline-3-boronic acidand was used in the subsequent reaction without being purified.According to Example 1(5), compound (18a) (the second stage yield: 60%)was prepared using3-isopropyl-4-(thiophen-3-yl)-1H-pyrazolo[3,4-b]pyridine instead ofcompound (1d).

¹H-NMR (DMSO-d₆) δ 8.97 (1H, d, J=1.7 Hz), 8.76 (1H, d, J=4.9 Hz), 8.63(1H, dd, J=8.8, 1.7 Hz), 8.42 (1H, d, J=2.4 Hz), 8.13 (1H, d, J=8.8 Hz),8.00 (1H, dd, J=8.8, 2.4 Hz), 7.36 (1H, d, J=4.9 Hz), 7.03 (1H, d, J=8.8Hz), 3.96 (3H, s), 3.06 (1H, q, J=6.6 Hz), 1.12 (6H, d, J=6.6 Hz); LRMS(ESI) m/z 448 [M+H]⁺.

Example 18(2)2-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(6-methoxypyridin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(18b)

According to Example 1(6), compound (18b) (77%) was prepared usingcompound (18a) instead of compound (1e).

¹H-NMR (DMSO-d₆) δ 8.68 (1H, d, J=4.6 Hz), 8.41 (1H, d, J=2.4 Hz),7.95-8.05 (2H, m), 7.70 (1H, dd, J=8.7, 1.7 Hz), 7.63 (1H, d, J=8.7 Hz),7.28 (1H, d, J=4.6 Hz), 7.03 (1H, d, J=8.5 Hz), 5.86 (1H, d, J=7.6 Hz),4.61 (1H, d, J=4.4 Hz), 3.96 (3H, s), 3.30-3.52 (2H, m), 3.03 (1H, q,J=6.8 Hz), 1.80-2.20 (4H, m), 1.20-1.50 (4H, m), 1.11 (6H, d, J=6.8 Hz);LRMS (ESI) m/z 483 [M+H]⁺.

Example 18(3)2-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(6-methoxypyridin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(18)

According to Example 1(7), compound (18) (63%) was prepared as a whitesolid using compound (18b) instead of compound (1f).

¹H-NMR (DMSO-d₆) δ 8.67 (1H, d, J=4.6 Hz), 8.37-8.45 (2H, m), 7.99 (1H,dd, J=8.8, 2.4 Hz), 7.85 (1H, d, J=1.7 Hz), 7.82 (1H, brs), 7.78 (1H, d,J=8.8 Hz), 7.46 (1H, dd, J=8.6, 1.7 Hz), 7.25 (1H, d, J=4.6 Hz), 7.13(1H, brs), 7.03 (1H, d, J=8.6 Hz), 4.59 (1H, d, J=4.4 Hz), 3.96 (3H, s),3.30-3.60 (2H, m), 3.03 (1H, q, J=6.8 Hz), 1.80-2.20 (4H, m), 1.20-1.45(4H, m), 1.12 (6H, d, J=6.8 Hz); LRMS (ESI) m/z 501 [M+H]⁺.

Example 192-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(5,6,7,8-tetrahydroquinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(19)

According to Example 1(4), a crude product of3-isopropyl-4-(5,6,7,8-tetrahydroquinolin-3-yl)-1H-pyrazolo[3,4-b]pyridinewas prepared using compound (6b) instead of compound (1c) and using5,6,7,8-tetrahydroquinolin-3-yl-boronic acid instead ofquinoline-3-boronic acid and was used in the subsequent reaction withoutbeing purified. According to Example 1(5), a crude product of2-bromo-4-{3-isopropyl-4-(5,6,7,8-tetrahydroquinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrilewas prepared using3-isopropyl-4-(5,6,7,8-tetrahydroquinolin-3-yl)-1H-pyrazolo[3,4-b]pyridineinstead of compound (1d) and was used in the subsequent reaction withoutbeing purified. According to Example 1(6), a crude product of2-(trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(5,6,7,8-tetrahydroquinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrilewas prepared using2-bromo-4-{3-isopropyl-4-(5,6,7,8-tetrahydroquinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrileinstead of compound (1e) and was used in the subsequent reaction withoutbeing purified. According to Example 1(7), compound (19) (the fourthstage yield: 2%) was prepared as a white solid using2-(trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(5,6,7,8-tetrahydroquinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 8.67 (1H, d, J=4.6 Hz), 8.50 (1H, s), 8.42 (1H, d,J=7.1 Hz), 7.86 (1H, d, J=1.9 Hz), 7.84 (1H, brs), 7.78 (1H, d, J=8.8Hz), 7.73 (1H, s), 7.46 (1H, dd, J=8.8, 1.9 Hz), 7.25 (1H, d, J=4.6 Hz),7.14 (1H, brs), 4.60 (1H, d, J=4.2 Hz), 3.30-3.60 (2H, m), 3.01 (1H, q,J=6.8 Hz), 2.82-2.95 (4H, m), 1.80-2.20 (8H, m), 1.20-1.45 (4H, m), 1.13(6H, d, J=6.8 Hz); LRMS (ESI) m/z 525 [M+H]⁺.

Example 202-(Benzylamino)-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(20)

According to Example 1(6),2-(benzylamino)-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrilewas prepared using compound (6d) instead of compound (1e) and usingbenzylamine instead of trans-aminocyclohexanol and was used in thesubsequent reaction without being purified. According to Example 1(7),compound (20) (the second stage yield: 22%) was prepared as a whitesolid using2-(benzylamino)-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrileinstead of (1f).

¹H-NMR (DMSO-d₆) δ 9.07 (1H, d, J=2.2 Hz), 8.91 (1H, t, J=5.8 Hz), 8.68(1H, d, J=4.9 Hz), 8.61 (1H, d, J=2.2 Hz), 8.09 (2H, t, J=9.2 Hz),7.87-7.66 (4H, m), 7.57 (1H, dd, J=1.9, 6.8 Hz), 7.42-7.26 (5H, m), 7.18(1H, t, J=7.2 Hz), 4.44 (1H, d, J=5.7 Hz), 2.95-2.82 (1H, m), 0.97 (6H,d, J=6.8 Hz); LRMS (ESI) m/z 513 [M+H]⁺.

Example 214-{3-Isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(pyridin-2-ylamino)benzamide(21)

According to Example 1(6),4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(pyridin-2-ylamino)benzonitrilewas prepared using compound (6d) instead of compound (1e) and using2-aminopyridine instead of trans-aminocyclohexanol and was used in thesubsequent reaction without being purified. According to Example 1(7),compound (21) (the second stage yield: 14%) was prepared as a whitesolid using4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(pyridin-2-ylamino)benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.68 (1H, s), 9.16 (1H, d, J=2.4 Hz), 8.79 (1H, d,J=4.6 Hz), 8.71 (1H, s), 8.26-8.24 (2H, m), 8.16 (2H, t, J=8.4 Hz), 7.97(2H, s), 7.94-7.97 (1H, m), 7.77-7.67 (2H, m), 7.44 (1H, d, J=4.6 Hz),6.92-6.88 (1H, m), 2.99 (1H, q, J=6.8 Hz), 1.07 (6H, d, J=6.8 Hz); LRMS(ESI) m/z 500 [M+H]⁺.

Example 224-{3-Isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-{2-(pyrrolidin-1-yl)ethylamino}benzamide(22)

According to Example 1(6),4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-{2-(pyrrolidin-1-yl)ethylamino}benzonitrilewas prepared using compound (6d) instead of compound (1e) and usingN-(2-aminoethyl)pyrrolidine instead of trans-aminocyclohexanol and wasused in the subsequent reaction without being purified. According toExample 1(7), (22) (the second stage yield: 61%) was prepared as a whitesolid using4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-{2-(pyrrolidin-1-yl)ethylamino}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.14 (1H, d, J=1.9 Hz), 8.76 (1H, d, J=4.6 Hz), 8.69(1H, d, J=1.6 Hz), 8.52 (1H, t, J=5.1 Hz), 8.15 (1H, t, J=8.6 Hz),7.93-7.87 (1H, m), 7.81-7.72 (3H, m), 7.56 (1H, dd, J=1.9, 6.5 Hz), 7.42(1H, d, J=4.6 Hz), 2.96 (1H, g, J=6.8 Hz), 2.80-2.70 (2H, m), 2.55-2.49(6H, m), 1.74-1.68 (4H, m), 1.06 (6H, d, J=6.8 Hz); LRMS (ESI) m/z 520[M+H]⁺.

Example 234-{3-Isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-{3-(methylthio)propylamino}benzamide(23)

According to Example 1(6),4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-{3-(methylthio)propylamino}benzonitrilewas prepared using compound (6d) instead of compound (1e) and using3-methylthiopropylamine instead of trans-aminocyclohexanol and was usedin the subsequent reaction without being purified. According to Example1(7), (23) (the second stage yield: 67%) was prepared as a white solidusing4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-{3-(methylthio)propylamino}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.07 (1H, d, J=2.4 Hz), 8.69 (1H, d, J=4.6 Hz), 8.61(1H, d, J=1.9 Hz), 8.48 (1H, t, J=5.4 Hz), 8.09 (2H, t, J=9.2 Hz),7.86-7.76 (3H, m), 7.70-7.65 (1H, m), 7.51 (1H, dd, J=1.9, 7.0 Hz), 7.34(1H, d, J=4.6 Hz), 2.95-2.85 (1H, m), 2.58-2.45 (4H, m), 2.02 (3H, s),1.93-1.83 (2H, m), 1.00 (6H, d, J=6.8 Hz); LRMS (ESI) m/z 511 [M+H]⁺.

Example 244-{3-Isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(1-methylpiperidin-4-ylamino)benzamide(24)

According to Example 1(6),4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(1-methylpiperidin-4-ylamino)benzonitrilewas prepared using compound (6d) instead of (1e) and using4-amino-1-methylpiperidine instead of trans-aminocyclohexanol and wasused in the subsequent reaction without being purified. According toExample 1(7), compound (24) (the second stage yield: 40%) was preparedas a white solid using4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(1-methylpiperidin-4-ylamino)benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.12 (1H, d, J=2.2 Hz), 8.73 (1H, d, J=4.6 Hz), 8.67(1H, d, J=2.2 Hz), 8.51 (1H, d, J=7.3 Hz), 8.13 (2H, t, J=8.9 Hz),7.91-7.70 (4H, m), 7.46 (1H, dd, J=1.9, 6.8 Hz), 7.40 (1H, d, J=4.6 Hz),2.94 (1H, g, J=6.8 Hz), 2.71-2.67 (2H, m), 2.18-2.02 (8H, m), 1.54-1.47(2H, m), 1.03 (6H, d, J=6.8 Hz); LRMS (ESI) m/z 520 [M+H]⁺.

Example 254-{3-Isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(neopentylamino)benzamide(25)

According to Example 1(6),4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(neopentylamino)benzonitrilewas prepared using compound (6d) instead of compound (1e) and usingneopentylamine instead of trans-aminocyclohexanol and was used in thesubsequent reaction without being purified. According to Example 1(7),compound (25) (the second stage yield: 60%) was prepared as a whitesolid using4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(neopentylamino)benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.12 (1H, d, J=2.4 Hz), 8.75 (1H, d, J=4.9 Hz), 8.67(1H, d, J=2.2 Hz), 8.13 (2H, t, J=8.6 Hz), 7.91-7.70 (4H, m), 7.49 (1H,dd, J=1.9, 6.8 Hz), 7.40 (1H, d, J=4.9 Hz), 3.01-2.89 (3H, m), 1.06-1.01(15H, m); LRMS (ESI) m/z 493 [M+H]⁺.

Example 264-{3-Isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-{3-(methylthio)phenylamino}benzamide(26)

According to Example 1(6),4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-{3-(methylthio)phenylamino}benzonitrilewas prepared using compound (6d) instead of compound (1e) and using3-(methylthio)aniline instead of trans-aminocyclohexanol and was used inthe subsequent reaction without being purified. According to Example1(7), (26) (the second stage yield: 61%) was prepared as a white solidusing4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-{3-(methylthio)phenylamino}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.11 (1H, d, J=2.2 Hz), 8.75 (1H, d, J=4.9 Hz), 8.67(1H, d, J=2.2 Hz), 8.60 (1H, d, J=1.9 Hz), 7.91-7.70 (4H, m), 7.49 (1H,dd, J=1.9, 6.8 Hz), 8.13 (1H, t, J=8.6 Hz), 7.94-7.85 (2H, m), 7.79-7.70(2H, m), 7.42 (1H, d, J=4.9 Hz), 7.32-7.25 (2H, m), 7.01 (1H, d, J=7.3Hz), 6.90 (1H, d, J=7.3 Hz), 2.93 (1H, g, J=6.8 Hz), 1.02 (6H, d, J=6.8Hz); LRMS (ESI) m/z 545 [M+H]⁺.

Example 272-{2-(Dimethylamino)ethylamino}-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(27)

According to Example 1(6),2-{2-(dimethylamino)ethylamino}-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrilewas prepared using compound (6d) instead of (1e) and usingN,N-dimethylethylenediamine instead of trans-aminocyclohexanol and wasused in the subsequent reaction without being purified. According toExample 1(7), compound (27) (the second stage yield: 57%) was preparedas a white solid using2-{2-(dimethylamino)ethylamino}-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.14 (1H, d, J=2.4 Hz), 8.76 (1H, d, J=4.6 Hz), 8.69(1H, d, J=2.4 Hz), 8.46 (1H, t, J=5.1 Hz), 8.15 (1H, t, J=8.3 Hz),7.93-7.87 (1H, m), 7.83-7.71 (3H, m), 7.56 (1H, dd, J=2.4, 8.4 Hz), 7.42(1H, d, J=4.9 Hz), 2.96 (1H, g, J=6.8 Hz), 2.58-2.49 (4H, m), 2.24 (6H,s), 1.06 (6H, d, J=6.8 Hz); LRMS (ESI) m/z 494 [M+H]⁺.

Example 284-{3-Isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-{2-(pyridin-2-yl)ethylamino}benzamide(28)

According to Example 1(6),4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-{2-(pyridin-2-yl)ethylamino}benzonitrilewas prepared using compound (6d) instead of compound (1e) and using3-(2-aminoethyl)pyridine instead of trans-aminocyclohexanol and was usedin the subsequent reaction without being purified. According to Example1(7), (28) (the second stage yield: 67%) was prepared as a white solidusing4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-{2-(pyridin-2-yl)ethylamino}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.15 (1H, d, J=2.2 Hz), 8.78 (1H, d, J=4.9 Hz),8.69-8.61 (3H, m), 8.45 (1H, dd, J=1.6, 3.2 Hz), 8.16 (1H, t, J=8.1 Hz),7.95-7.72 (6H, m), 7.56 (1H, dd, J=1.9, 6.8 Hz), 7.44 (1H, d, J=4.9 Hz),7.38-7.34 (1H, m), 3.55-3.47 (2H, m), 3.03-2.92 (3H, m), 1.07 (6H, d,J=6.8 Hz); LRMS (ESI) m/z 528 [M+H]⁺.

Example 292-{3-(Dimethylamino)propylamino}-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(29)

According to Example 1(6),2-{3-(dimethylamino)propylamino}-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrilewas prepared using compound (6d) instead of (1e) and usingN,N-dimethyl-1,3-propanediamine instead of trans-aminocyclohexanol andwas used in the subsequent reaction without being purified. According toExample 1(7), compound (29) (the second stage yield: 14%) was preparedas a white solid using2-{3-(dimethylamino)propylamino}-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.12 (1H, d, J=2.2 Hz), 8.75 (1H, d, J=4.9 Hz), 8.67(1H, d, J=2.2 Hz), 8.50-8.46 (1H, m), 8.14 (1H, t, J=8.4 Hz), 7.91-7.70(4H, m), 7.52 (1H, dd, J=1.9, 6.8 Hz), 7.41 (1H, d, J=4.9 Hz), 2.94 (1H,q, J=6.8 Hz), 2.80-2.66 (1H, m), 2.50-2.44 (8H, m), 1.97-1.88 (2H, m),1.04 (6H, d, J=6.8 Hz); LRMS (ESI) m/z 508 [M+H]⁺.

Example 302-(Cyclohexylmethylamino)-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(30)

According to Example 1(6),2-(cyclohexylmethylamino)-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrilewas prepared using compound (6d) instead of (1e) and usingaminomethylcyclohexane instead of trans-aminocyclohexanol and was usedin the subsequent reaction without being purified. According to Example1(7), compound (30) (the second stage yield: 56%) was prepared as awhite solid using2-(cyclohexylmethylamino)-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (CDCl₃) δ 9.07 (1H, d, J=2.2 Hz), 8.67 (1H, d, J=4.9 Hz), 8.30(1H, d, J=1.9 Hz), 8.24 (1H, d, J=8.1 Hz), 7.94 (1H, d, J=8.1 Hz),7.86-7.82 (2H, m), 7.71-7.60 (2H, m), 7.16 (1H, d, J=4.9 Hz), 3.16 (2H,t, J=5.9 Hz), 2.97 (1H, q, J=7.0 Hz), 1.95-1.90 (2H, m), 1.79-1.71 (5H,m), 1.32-1.01 (11H, m); LRMS (ESI) m/z 519 [M+H]⁺.

Example 314-{3-Isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(2-morpholinoethylamino)benzamide(31)

According to Example 1(6),4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(2-morpholinoethylamino)benzonitrilewas prepared using compound (6d) instead of compound (1e) and using2-morpholinoethylamine instead of trans-aminocyclohexanol and was usedin the subsequent reaction without being purified. According to Example1(7), compound (31) (the second stage yield: 43%) was prepared as awhite solid using4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(2-morpholinoethylamino)benzonitrileinstead of compound (1f).

¹H-NMR (CDCl₃) δ 9.06 (1H, d, J=1.9 Hz), 8.67 (1H, d, J=4.9 Hz), 8.30(1H, s), 8.24 (1H, d, J=8.4 Hz), 7.96-7.91 (2H, m), 7.89-7.83 (2H, m),7.72-7.65 (1H, m), 7.54 (1H, d, J=4.9 Hz), 7.18 (1H, d, J=1.9 Hz),3.43-3.40 (2H, m), 2.96 (1H, q, J=6.8 Hz), 2.76 (2H, t, J=5.9 Hz),2.57-2.54 (4H, m), 1.14 (6H, d, J=6.8 Hz); LRMS (ESI) m/z 536 [M+H]⁺.

Example 324-{3-Isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(isoxazol-3-ylamino)benzamide(32)

According to Example 1(6),4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(isoxazol-3-ylamino)benzonitrilewas prepared using compound (6d) instead of compound (1e) and using3-aminoisoxazole instead of trans-aminocyclohexanol and was used in thesubsequent reaction without being purified. According to Example 1(7),compound (32) (the second stage yield: 40%) was prepared as a whitesolid using4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(isoxazol-3-ylamino)benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.14-9.13 (2H, m), 8.77 (1H, d, J=4.9 Hz), 8.73-8.69(2H, m), 8.14 (2H, t, J=8.6 Hz), 8.02 (2H, s), 7.92-7.85 (1H, m),7.75-7.70 (1H, m), 7.43 (1H, d, J=4.9 Hz), 6.57 (1H, s), 2.97 (1H, q,J=6.5 Hz), 1.06 (6H, d, J=6.5 Hz); LRMS (ESI) m/z 490 [M+H]⁺.

Example 334-{3-Isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(4-morpholinophenylamino)benzamide(33)

According to Example 1(6),4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(4-morpholinophenylamino)benzonitrilewas prepared using compound (6d) instead of compound (1e) and using4-morpholinoaniline instead of trans-aminocyclohexanol and was used inthe subsequent reaction without being purified. According to Example1(7), compound (33) (the second stage yield: 11%) was prepared as awhite solid using4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(4-morpholinophenylamino)benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.10 (1H, s), 8.72 (1H, d, J=4.6 Hz), 8.66 (1H, s),8.28 (1H, d, J=2.2 Hz), 8.13 (2H, t, J=8.6 Hz), 7.88 (1H, t, J=8.6 Hz),7.72 (1H, t, J=7.6 Hz), 7.63 (1H, dd, J=2.2, 6.5 Hz), 7.40-7.39 (2H, m),7.22 (2H, d, J=8.6 Hz), 7.01-6.98 (2H, m), 3.75-3.72 (4H, m), 3.09-3.05(4H, m), 2.98-2.87 (1H, m), 1.00 (6H, d, J=6.8 Hz); LRMS (ESI) m/z 584[M+H]⁺.

Example 344-{3-Isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-{4-(pyrrolidine-1-carbonyl)phenylamino}benzamide(34)

According to Example 1(6),4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-{4-(pyrrolidine-1-carbonyl)phenylamino}benzonitrilewas prepared using compound (6d) instead of compound (1e) and using(4-aminophenyl)(pyrrolidin-1-yl)methanone instead oftrans-aminocyclohexanol and was used in the subsequent reaction withoutbeing purified. According to Example 1(7), compound (34) (the secondstage yield: 59%) was prepared as a white solid using4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-{4-(pyrrolidine-1-carbonyl)phenylamino}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.12 (1H, d, J=1.9 Hz), 8.76 (1H, d, J=4.6 Hz), 8.64(2H, dd, J=1.9, 11.9 Hz), 8.13 (2H, t, J=4.6 Hz), 7.96-7.69 (4H, m),7.55 (2H, d, J=8.6 Hz), 7.42 (1H, d, J=4.6 Hz), 7.35 (2H, d, J=8.6 Hz),2.99-2.89 (1H, m), 2.52-2.48 (4H, m), 1.92-1.72 (4H, m), 1.01 (6H, d,J=6.8 Hz); LRMS (ESI) m/z 596 [M+H]⁺.

Example 354-{3-Isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-{4-(pyrrolidin-1-ylmethyl)phenylamino}benzamide(35)

According to Example 1(6),4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-{4-(pyrrolidin-1-ylmethyl)phenylamino}benzonitrilewas prepared using compound (6d) instead of compound (1e) and using4-(pyrrolidin-1-ylmethyl)aniline instead of trans-aminocyclohexanol andwas used in the subsequent reaction without being purified. According toExample 1(7), compound (35) (the second stage yield: 53%) was preparedas a white solid using4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-{4-(pyrrolidin-1-ylmethyl)phenylamino}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.02 (1H, d, J=2.2 Hz), 8.63 (1H, d, J=10.8 Hz),8.47-8.39 (1H, m), 8.12-8.01 (2H, m), 7.92-7.64 (3H, m), 7.55-7.45 (2H,m), 7.26-7.12 (5H, m), 3.62 (2H, s), 2.78-2.68 (1H, m), 2.40-2.23 (4H,m), 1.72-1.50 (4H, m), 0.92 (6H, d, J=6.5 Hz); LRMS (ESI) m/z 582[M+H]⁺.

Example 364-{4-(1H-Imidazol-1-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(trans-4-hydroxycyclohexylamino)benzamide(36) Example 36(1)2-Bromo-4-{4-chloro-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(36a)

According to Example 1(5), compound (36a) (93%) was prepared as a whitesolid using compound (6b) instead of compound (1d).

¹H-NMR (DMSO-d₆) δ 8.87 (1H, d, J=2.2 Hz), 8.67 (1H, d, J=5.1 Hz), 8.55(1H, dd, J=8.6, 2.2 Hz), 8.13 (1H, d, J=8.6 Hz), 7.59 (1H, d, J=5.1 Hz),3.73 (1H, q, J=6.8 Hz), 1.45 (6H, d, J=6.8 Hz); LRMS (ESI) m/z 375[M+H]⁺.

Example 36(2)4-{4-(1H-Imidazol-1-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-bromo-benzonitrile(36b)

A solution of compound (36a) (0.196 g), potassium carbonate (0.145 g),copper(II) oxide (nanopowder) (0.021 g), and imidazole (0.042 g) in DMF(2.0 mL) was stirred at 120° C. for 20 hr. The reaction solution wasdiluted with chloroform, and insoluble matters were filtered throughcelite. The solvent was distilled away, and ethyl acetate and ether wereadded to the residue. The precipitate was collected by filtration toobtain compound (36b) (0.173 g, 81%) as a white solid.

¹H-NMR (DMSO-d₆) δ 8.93 (1H, d, J=2.0 Hz), 8.87 (1H, d, J=4.9 Hz), 8.60(1H, dd, J=8.6, 2.0 Hz), 8.22 (1H, s), 8.15 (1H, d, J=8.6 Hz), 7.78 (1H,s), 7.53 (1H, d, J=4.9 Hz), 7.26 (1H, s), 3.12 (1H, q, J=6.8 Hz), 1.11(6H, d, J=6.8 Hz); LRMS (ESI) m/z 407 [M+H]⁺.

Example 36(3)4-{4-(1H-Imidazol-1-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(trans-4-hydroxycyclohexylamino)benzamide(36)

According to Examples 1(6) and 1(7), compound (36) (the second stageyield: 27%) was prepared as a white solid using (36b) instead ofcompound (1e).

¹H-NMR (DMSO-d₆) δ 8.76 (1H, d, J=4.9 Hz), 8.41 (1H, d, J=4.9 Hz), 8.21(1H, s), 7.85 (1H, brs), 7.75-7.82 (3H, m), 7.39-7.45 (2H, m), 7.25 (1H,s), 7.15 (1H, brs), 4.60 (1H, d, J=4.4 Hz), 3.30-3.60 (2H, m), 3.10 (1H,q, J=6.8 Hz), 1.80-2.20 (4H, m), 1.20-1.45 (4H, m), 1.10 (6H, d, J=6.8Hz); LRMS (ESI) m/z 460 [M+H]⁺.

Example 372-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(4-phenyl-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(37) Example 37(1)2-Bromo-4-{3-isopropyl-4-(4-phenyl-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(37a)

According to Example 36(2), compound (37a) (72%) was prepared as a whitesolid using 4-phenyl-1H-imidazole instead of imidazole.

¹H-NMR (DMSO-d₆) δ 8.96 (1H, d, J=2.2 Hz), 8.91 (1H, d, J=4.9 Hz), 8.63(1H, dd, J=8.5, 2.2 Hz), 8.31 (1H, s), 8.30 (1H, s), 8.17 (1H, d, J=8.5Hz), 7.90 (2H, d, J=7.3 Hz), 7.63 (1H, d, J=4.9 Hz), 7.43 (2H, t, J=7.3Hz), 7.29 (1H, t, J=7.3 Hz), 3.24 (1H, q, J=6.8 Hz), 1.16 (6H, d, J=6.8Hz); LRMS (ESI) m/z 483 [M+H]⁺.

Example 37(2)2-(Trans-4-hydroxycyclohexylamino)-4-{3-isopropyl-4-(4-phenyl-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(37)

According to Examples 1(6) and 1(7), compound (37) (the second stageyield: 49%) was prepared as a white solid using (37a) instead ofcompound (1e).

¹H-NMR (DMSO-d₆) δ 8.80 (1H, d, J=5.1 Hz), 8.43 (1H, d, J=7.3 Hz), 8.29(2H, s), 7.90 (2H, d, J=7.6 Hz), 7.88 (1H, brs), 7.75-7.83 (2H, m), 7.50(1H, d, J=5.1 Hz), 7.38-7.47 (3H, m), 7.29 (1H, t, J=7.6 Hz), 7.17 (1H,brs), 4.59 (1H, d, J=4.1 Hz), 3.30-3.60 (2H, m), 3.22 (1H, q, J=6.8 Hz),1.80-2.20 (4H, m), 1.25-1.85 (4H, m), 1.15 (6H, d, J=6.8 Hz); LRMS (ESI)m/z 536 [M+H]⁺.

Example 383-Chloro-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(38) Example 38(1)3-Chloro-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(38a)

According to Example 1(5), compound (38a) (79%) was prepared as a whitesolid using 3-chloro-4-fluorobenzonitrile instead of2-bromo-4-fluorobenzonitrile.

¹H-NMR (DMSO-d₆) δ 9.16 (1H, s), 8.73 (1H, s), 8.67 (1H, d, J=4.4 Hz),8.41 (1H, s), 8.13-8.22 (2H, m), 8.09 (1H, d, J=8.0 Hz), 7.89-8.00 (2H,m), 7.75 (1H, t, J=8.0 Hz), 7.44 (1H, d, J=4.4 Hz), 3.02 (1H, q, J=6.8Hz), 1.04 (6H, d, J=6.8 Hz); LRMS (ESI) m/z 424 [M+H]⁺.

Example 38(2)3-Chloro-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(38)

According to Example 1(7), compound (38) (33%) was prepared as a whitesolid using compound (38a) instead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.17 (1H, d, J=2.4 Hz), 8.73 (1H, s), 8.65 (1H, d,J=4.9 Hz), 8.10-8.30 (4H, m), 8.05 (1H, d, J=8.0 Hz), 7.90 (1H, t, J=8.0Hz), 7.65-7.80 (3H, m), 7.41 (1H, d, J=4.9 Hz), 3.02 (1H, q, J=6.8 Hz),1.04 (6H, d, J=6.8 Hz); LRMS (ESI) m/z 442 [M+H]⁺.

Example 396-{3-Isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}nicotinamide(39)

According to Example 1(5), a crude product of6-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}nicotinonitrilewas prepared using 6-chloronicotinonitrile instead of2-bromo-4-fluorobenzonitrile and was used in the subsequent reactionwithout being purified. According to Example 1(7), compound (39) (thesecond stage yield: 51%) was prepared as a white solid using6-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}nicotinonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.15 (1H, d, J=2.2 Hz), 9.08 (1H, d, J=1.7 Hz), 8.79(1H, d, J=4.6 Hz), 8.71 (1H, d, J=2.2 Hz), 8.48 (1H, dd, J=8.6, 2.2 Hz),8.42 (1H, d, J=8.6 Hz), 8.24 (1H, brs), 8.15-8.20 (2H, m), 7.91 (1H, td,J=8.1, 1.7 Hz), 7.75 (1H, t, J=8.1 Hz), 7.66 (1H, brs), 7.48 (1H, d,J=4.6 Hz), 2.98 (1H, q, J=6.8 Hz), 1.07 (6H, d, J=6.8 Hz); LRMS (ESI)m/z 409 [M+H]⁺.

Example 402-(Trans-4-hydroxycyclohexylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(40) Example 40(1) Tert-butyl 3-ethylpyridin-2-ylcarbamate (40a)

Normal-butyllithium (2.69 M, 157.1 mL) was dropwise added to a solutionof tert-butyl 3-methylpyridin-2-ylcarbamate (40.0 g) in THF (550 mL) atan internal temperature of −40 to −20° C., followed by stirring at 0° C.for 1 hr. Subsequently, a solution of methyl iodide (28.6 g) in THF (50mL) was dropwise added to the reaction solution at an internaltemperature of −70 to −60° C., followed by stirring at −78° C. for 30min. The reaction solution was poured into ice water, followed byextraction with ethyl acetate twice. The organic layers were combined,washed with saturated saline, and dried over anhydrous sodium sulfate.The solvent was distilled away. Hexane (300 mL) was added to theresulting residue, and the precipitate was collected by filtration anddried under reduced pressure to obtain compound (40a) (32.4 g, 76%) as awhite solid.

¹H-NMR (CDCl₃) δ 8.28 (1H, dd, J=4.8 Hz, 1.6 Hz), 7.56-7.54 (1H, m),7.07 (1H, dd, J=7.7, 4.8 Hz), 6.72 (1H, brs), 2.65 (2H, q, J=7.5 Hz),1.51 (9H, s), 1.24 (3H, t, J=7.6 Hz); LRMS (ESI) m/z 223 [M+H]⁺.

Example 40(2) 3-Methyl-1H-pyrrolo[2,3-b]pyridine (40b)

Normal-butyllithium (2.69 M, 118.7 mL) was dropwise added to a solutionof compound (40a) (32.4 g) in THF (500 mL) at an internal temperature of−30 to −10° C., followed by stirring at 0° C. for 30 min. Subsequently,a solution of DMF (11.18 g) in THF (50 mL) was added to the reactionsolution at an internal temperature of −40° C., followed by increasingthe temperature to room temperature. Then, 6 N hydrochloric acid (200mL) was added to the reaction solution, followed by stirring at 60° C.for 2 hr. After cooling, ethyl acetate (200 mL) and water (100 mL) wereadded to the reaction solution for distribution. The aqueous layer wasadded to sodium hydroxide (4 M, 300 mL), and pH was adjusted to 12,followed by stirring for 1 hr. The precipitate was collected byfiltration, washed by sprinkling water, and dried under reduced pressureto obtain compound (40b) (16.52 g, 86%) as a white solid.

¹H-NMR (CDCl₃) δ 9.56 (1H, brs), 8.30 (1H, dd, J=4.6, 1.2 Hz), 7.89 (1H,dd, J=7.8, 1.5 Hz), 7.09-7.06 (2H, m), 2.33 (3H, s); LRMS (ESI) m/z 133[M+H]⁺.

Example 40(3) 3-Methyl-1H-pyrrolo[2,3-b]pyridine 7-oxide m-chlorobenzoicacid salt (40c)

According to Example 1(2), compound (40c) (77%) was prepared as a whitesolid using compound (40b) instead of compound (1a).

¹H-NMR (DMSO-d₆) δ 12.07 (1H, brs), 8.09 (1H, d, J=6.1 Hz), 7.89-7.87(2H, m), 7.70-7.67 (1H, m), 7.59 (1H, d, J=7.8 Hz), 7.55-7.51 (1H, m),7.21 (1H, s), 7.04 (1H, dd, J=7.8, 6.1 Hz), 2.24 (3H, s); LRMS (ESI) m/z305 [M+H]⁺.

Example 40(4) 4-Chloro-3-methyl-1H-pyrrolo[2,3-b]pyridine (40d)

According to Example 1(3), compound (40d) (39%) was prepared as a whitesolid using compound (40c) instead of compound (1b).

¹H-NMR (DMSO-d₆) δ 11.63 (1H, s), 8.08 (1H, d, J=5.1 Hz), 7.30 (1H, s),7.07 (1H, d, J=5.1 Hz), 2.42 (3H, s); LRMS (ESI) m/z 167 [M+H]⁺.

Example 40(5) 3-{3-Methyl-1H-pyrrolo[2,3-b]pyridin-4-yl}quinoline (40e)

According to Example 1(4), compound (40e) (82%) was prepared as a whitesolid using compound (40d) instead of compound (1c).

¹H-NMR (CDCl₃) δ 9.53 (1H, brs), 9.08 (1H, d, J=2.2 Hz), 8.38 (1H, d,J=4.6 Hz), 8.27 (1H, d, J=2.0 Hz), 8.21 (1H, d, J=8.5 Hz), 7.92 (1H, d,J=8.3 Hz), 7.82-7.78 (1H, m), 7.66-7.62 (1H, m), 7.17 (1H, s), 7.08 (1H,d, J=4.9 Hz), 1.98 (3H, s); LRMS (ESI) m/z 260 [M+H]⁺.

Example 40(6)2-Bromo-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrile(40f)

According to Example 1(5), compound (40f) (960) was prepared as a whitesolid using compound (40e) instead of compound (1d).

¹H-NMR (DMSO-d₆) δ 9.05 (1H, d, J=2.2 Hz), 8.75 (1H, d, J=2.0 Hz), 8.56(1H, d, J=2.2 Hz), 8.49 (1H, d, J=4.6 Hz), 8.39 (1H, dd, J=8.7, 1.8 Hz),8.13-8.11 (4H, m), 7.88-7.84 (1H, m), 7.73-7.69 (1H, m), 7.36 (1H, d,J=4.9 Hz), 1.90 (3H, s); LRMS (ESI) m/z 440 [M+H]⁺.

Example 40(7)2-(Trans-4-hydroxycyclohexylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrile(40h)

According to Example 1(6), compound (40h) (76%) was prepared as a whitesolid using compound (40f) instead of compound (1e).

¹H-NMR (CDCl₃) δ 9.06 (1H, d, J=2.2 Hz), 8.44 (1H, d, J=4.9 Hz), 8.27(1H, d, J=2.0 Hz), 8.22 (1H, d, J=8.3 Hz), 7.93 (1H, d, J=7.8 Hz),7.84-7.80 (1H, m), 7.68-7.64 (1H, m), 7.51 (1H, d, J=8.5 Hz), 7.47 (1H,d, J=1.7 Hz), 7.37 (1H, s), 7.15 (1H, d, J=4.9 Hz), 7.03 (1H, dd, J=8.5,1.7 Hz), 4.54 (1H, d, J=7.6 Hz), 3.79-3.72 (1H, m), 3.52-3.43 (1H, m),2.28-2.25 (2H, m), 2.11-2.07 (2H, m), 1.99 (3H, s), 1.54-1.34 (4H, m);LRMS (ESI) m/z 474 [M+H]⁺.

Example 40(8)2-(Trans-4-hydroxycyclohexylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(40)

According to Example 1(7), compound (40) (83%) was prepared as a whitesolid using compound (40h) instead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.06 (1H, d, J=2.2 Hz), 8.55 (1H, d, J=2.2 Hz),8.41-8.39 (2H, m), 8.12 (2H, d, J=8.5 Hz), 7.90 (1H, s), 7.87-7.83 (1H,m), 7.75 (1H, d, J=8.5 Hz), 7.72-7.68 (1H, m), 7.40 (1H, d, J=2.0 Hz),7.25 (1H, d, J=4.2 Hz), 7.12 (1H, brs), 7.04 (1H, dd, J=8.5, 2.0 Hz),4.56 (1H, d, J=4.2 Hz), 3.54-3.36 (2H, m), 2.10-2.07 (2H, m), 1.91 (3H,s), 1.87-1.84 (2H, m), 1.39-1.20 (4H, m); LRMS (ESI) m/z 492 [M+H]⁺.

Example 414-{3-Ethyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}-2-(trans-4-hydroxycyclohexylamino)benzamide(41) Example 41(1) Tert-butyl 3-propylpyridin-2-ylcarbamate (41a)

According to Example 40(1), compound (41a) (77%) was prepared as a whitesolid using ethyl iodide instead of methyl iodide.

¹H-NMR (CDCl₃) δ 8.29 (1H, dd, J=4.6, 1.7 Hz), 7.52 (1H, dd, J=7.6, 1.7Hz), 7.05 (1H, dd, J=7.6, 4.6 Hz), 6.73 (1H, brs), 2.59 (2H, t, J=7.6Hz), 1.60-1.70 (2H, m), 1.52 (9H, s), 0.97 (3H, t, J=7.3 Hz); LRMS (ESI)m/z 237 [M+H]⁺.

Example 41(2) 3-Ethyl-1H-pyrrolo[2,3-b]pyridine (41b)

According to Example 40(2), compound (41b) (99%) was prepared as a whitesolid using compound (41a) instead of compound (40a).

¹H-NMR (CDCl₃) δ 11.05 (1H, brs), 8.31 (1H, d, J=4.9 Hz) 7.92 (1H, dd,J=7.8, 1.0 Hz), 7.13 (1H, s), 7.05 (1H, dd, J=7.8, 4.9 Hz), 2.77 (2H, q,J=7.6 Hz), 1.33 (3H, t, J=7.6); LRMS (ESI) m/z 147 [M+H]⁺.

Example 41(3) 4-Chloro-3-ethyl-1H-pyrrolo[2,3-b]pyridine (41c)

According to Example 1(2), a crude product of3-ethyl-1H-pyrrolo[2,3-b]pyridine 7-oxide m-chlorobenzoic acid salt wasprepared using compound (41b) instead of compound (1a) and was used inthe subsequent reaction without being purified. According to Example1(3), compound (41c) (the second stage yield: 33%) was prepared as awhite solid using 3-ethyl-1H-pyrrolo[2,3-b]pyridine 7-oxidem-chlorobenzoic acid salt instead of compound (1b).

¹H-NMR (CDCl₃) δ 10.49 (1H, brs), 8.14 (1H, d, J=5.1 Hz) 7.14 (1H, s),7.05 (1H, d, J=5.1 Hz), 2.99 (2H, q, J=7.6 Hz), 1.33 (3H, t, J=7.6);LRMS (ESI) m/z 181 [M+H]⁺.

Example 41(4)4-Chloro-3-ethyl-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrrolo[2,3-b]pyridine(41d)

Sodium hydride (0.877 g, a 55% dispersion in paraffin liquid) was addedto a solution of compound (41c) (3.3 g) in DMF (61 mL) at 0° C.,followed by stirring for 10 min. Then,[2-(chloromethoxy)ethyl]trimethylsilane (3.53 mL) was added to thereaction solution, followed by stirring at room temperature for 1 hr.After cooling, ice water was added to the reaction solution, followed byextraction with ethyl acetate. The organic layer was washed with waterand saturated saline in this order and was then dried over anhydroussodium sulfate. After distillation of the solvent, the residue waspurified by neutral silica gel column chromatography (n-hexane/ethylacetate) to obtain compound (41d) (4.30 g, 76%) as a colorless oilysubstance.

¹H-NMR (CDCl₃) δ 8.21 (1H, d, J=5.1 Hz), 7.19 (1H, s), 7.10 (1H, d,J=5.1 Hz), 5.68 (2H, s), 3.58 (2H, t, J=8.2 Hz), 3.04 (2H, q, J=7.3 Hz),1.39 (3H, t, J=7.3 Hz), 0.97 (2H, t, J=8.2 Hz), 0.00 (9H, s); LRMS (ESI)m/z 311 [M+H]⁺.

Example 41(5)3-{3-Ethyl-1-[(2-(trimethylsilyl)ethoxy)methyl]-1H-pyrrolo[2,3-b]pyridine}quinoline(41e)

A solution of compound (41d) (4.30 g), quinoline-3-boronic acid (3.59g), tripotassium phosphate (5.87 g), palladium acetate (0.062 g), and2-dicyclohexylphosphino-2′,6′-dimethoxybiphenyl (Sphos, 0.227 g) in amixture of n-butanol (69 mL) and water (28 mL) was stirred under anitrogen atmosphere at 100° C. for 1 hr. The reaction solution wasdistributed between ethyl acetate and water, and the organic layer waswashed with saturated saline. The organic layer after the washing wasdried over anhydrous sodium sulfate, and the solvent was distilled away.The residue was purified by neutral silica gel column chromatography(n-hexane/ethyl acetate) to obtain compound (41e) (4.3 g, 77%) as awhite solid.

¹H-NMR (CDCl₃) δ 9.08 (1H, d, J=2.2 Hz), 8.42 (1H, d, J=4.9 Hz), 8.28(1H, d, J=2.2 Hz), 8.24 (1H, d, J=8.3 Hz), 7.93-7.95 (1H, m), 7.85-7.81(1H, m), 7.69-7.65 (1H, m), 7.24 (1H, s), 7.08 (1H, d, J=4.9 Hz), 5.75(2H, s), 3.61-3.66 (2H, m), 2.34-2.39 (2H, m), 0.95-1.01 (5H, m), 0.00(9H, s); LRMS (ESI) m/z 404 [M+H]⁺.

Example 41(6) 3-{3-Ethyl-1H-pyrrolo[2,3-b]pyridin-4-yl}quinoline (41f)

Tetrabutylammonium floride (a 1.0 M solution in THF, 32.0 mL) was addedto a solution of compound (41e) (4.30 g) in THF (35.5 mL), followed bystirring under reflux for 23 hr. The reaction solution was distributedbetween ethyl acetate and a saturated aqueous sodium bicarbonatesolution, and the organic layer was washed with saturated saline. Theorganic layer after the washing was dried over anhydrous sodium sulfate,and the solvent was distilled away. The residue was purified by NHsilica gel column chromatography (n-hexane/ethyl acetate) to obtaincompound (41f) (1.65 g, 57%) as a white solid.

¹H-NMR (CDCl₃) δ 9.73 (1H, brs), 9.08 (1H, d, J=2.2 Hz), 8.39 (1H, d,J=4.9 Hz), 8.26 (1H, d, J=2.2 Hz), 8.22 (1H, d, J=8.3 Hz), 7.92 (1H, d,J=7.3 Hz), 7.82-7.78 (1H, m), 7.64 (1H, t, J=7.6 Hz), 7.21 (1H, s), 7.06(1H, dd, J=4.9, 1.0 Hz), 2.36 (2H, q, J=7.6 Hz), 0.94 (3H, dd, J=7.6,7.1 Hz); LRMS (ESI) m/z 274 [M+H]⁺.

Example 41(7)2-Bromo-4-{3-ethyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrile(41h)

According to Example 1(5), compound (41h) (98%) was prepared as a whitesolid using compound (41f) instead of compound (1d).

¹H-NMR (CDCl₃) δ 9.04 (1H, d, J=2.0 Hz), 8.46 (1H, d, J=4.6 Hz), 8.41(1H, d, J=2.2 Hz), 8.25 (1H, d, J=2.2 Hz), 8.22 (1H, d, J=8.5 Hz), 8.10(1H, dd, J=8.5, 2.2 Hz), 7.93 (1H, d, J=7.8 Hz), 7.78-7.85 (2H, m), 7.67(1H, t, J=7.6 Hz), 7.39 (1H, s), 7.17 (1H, d, J=4.9 Hz), 2.35 (2H, q,J=7.3 Hz), 0.99 (3H, t, J=7.3 Hz); LRMS (ESI) m/z 454 [M+H]⁺.

Example 41(8)4-{3-Ethyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}-2-(trans-4-hydroxycyclohexylamino)benzamide(41)

According to Example 1(6),4-{3-ethyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}-2-(trans-4-hydroxycyclohexylamino)benzonitrilewas prepared as a crude product using compound (41h) instead of compound(1e) and was used in the subsequent reaction without being purified.According to Example 1(7), compound (41) (the second stage yield: 51%)was prepared as a white solid using4-{3-ethyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}-2-(trans-4-hydroxycyclohexylamino)benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.06 (1H, brs), 8.56 (1H, brs), 8.41-8.44 (2H, m),8.12-8.16 (2H, m), 7.85-7.87 (3H, m), 7.77 (1H, d, J=8.3 Hz), 7.73-7.70(1H, m), 7.46 (1H, brs), 7.25 (1H, d, J=4.6 Hz), 7.14 (1H, brs), 7.04(1H, d, J=8.3 Hz), 4.57 (1H, d, J=3.2 Hz), 3.51 (1H, brs), 3.40 (1H,brs), 2.33 (2H, q, J=7.2 Hz), 2.10-2.13 (2H, m), 1.86-1.88 (2H, m),1.25-1.40 (4H, m), 0.83 (3H, t, J=7.2 Hz); LRMS (ESI) m/z 506 [M+H]⁺.

Example 42Trans-4-{2-carbamoyl-5-{3-ethyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}phenylamino}cyclohexyl-2-aminoacetatedimethanesulfonate (42)

N-(Tert-butoxycarbonyl)glycine (0.260 g),1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (0.291 g),and 4-(N,N-dimethylamino)pyridine (0.007 g) were added to a solution of(41) (0.300 g) in DMF (5.93 mL), followed by stirring under argon flowat room temperature for 5 hr. The reaction solution was distributedbetween ethyl acetate and water, and the organic layer was washed withsaturated saline. The organic layer after the washing was dried overanhydrous sodium sulfate, and the solvent was distilled away. Theresidue was purified by neutral silica gel column chromatography(n-hexane/ethyl acetate) to obtaintrans-4-{2-carbamoyl-5-[(3-ethyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}phenylamino]cyclohexyl-2-(tert-butoxycarbonylamino)acetate(0.360 g, 610) as a colorless oily substance. Subsequently,trifluoroacetic acid (0.87 mL) was added to a solution of the colorlessoily substance (0.360 g) in dichloromethane (1.74 mL) at roomtemperature, followed by stirring for 1 hr. The reaction solvent wasdistilled away under reduced pressure, and a saturated aqueous sodiumbicarbonate solution was added to the residue, followed by extractionwith ethyl acetate. The organic layer was washed with saturated saline.The organic layer after the washing was dried over anhydrous sodiumsulfate, and then the solvent was distilled away. Dichloromethane (10mL) and ethanol (3 mL) were added to the residue, and thenmethanesulfonic acid (0.07 mL) was added thereto, followed by stirringat room temperature for 1 hr. The precipitate was collected byfiltration, washed by sprinkling dichloromethane, and dried underreduced pressure to obtain (42) (0.336 g, the third stage yield: 37%) asa yellow solid.

¹H-NMR (DMSO-d₆) δ 9.29 (1H, d, J=2.2 Hz), 8.90 (1H, s), 8.44 (1H, d,J=4.9 Hz), 8.32-8.21 (3H, m), 8.05-7.99 (1H, m), 7.91-7.79 (2H, m), 7.50(1H, d, J=1.9 Hz), 7.31 (1H, d, J=4.9 Hz), 7.09 (1H, dd, J=2.2, 6.5 Hz),4.57-4.45 (2H, brs), 3.86-3.80 (1H, m), 3.58-3.52 (1H, brs), 2.62-2.47(3H, m), 2.38-2.29 (8H, m), 2.20-2.13 (2H, m), 2.03-1.99 (2H, m),1.68-1.39 (4H, m), 0.88 (3H, t, J=7.6 Hz); LRMS (ESI) m/z 563 [M+H]⁺.

Example 432-(Trans-4-hydroxycyclohexylamino)-4-{4-(quinolin-3-yl)-3-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(43) Example 43(1)4-Chloro-3-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridine (43a)

According to Example 40(1), tert-butyl3-(2,2,2-trifluoroethyl)pyridin-2-ylcarbamate was prepared as a crudeproduct using trifluoromethyl iodide instead of methyl iodide and wasused in the subsequent reaction without being purified. According toExample 40(2), a crude product of3-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridine was prepared using3-(2,2,2-trifluoroethyl)pyridin-2-ylcarbamate instead of compound (40a)and was used in the subsequent reaction without being purified.According to Example 1(2), a crude product of3-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridine 7-oxide m-chlorobenzoicacid salt was prepared using3-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridine instead of compound (1a)and was used in the subsequent reaction without being purified.According to Example 1(3), compound (43a) (the fourth stage yield: 15%)was prepared as a white solid using3-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridine 7-oxide m-chlorobenzoicacid salt instead of compound (1b).

¹H-NMR (DMSO-d₆) δ 8.38 (1H, d, J=5.1 Hz), 8.36 (1H, s), 7.43 (1H, d,J=5.1 Hz); LRMS (ESI) m/z 221 [M+H]⁺.

Example 43(2)3-{3-(Trifluoromethyl)-1H-pyrrolo[2,3-b]pyridin-4-yl}quinoline (43b)

According to Example 41(4),4-chloro-3-(trifluoromethyl)-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrrolo[2,3-b]pyridine(82%) was prepared as a colorless oily substance using compound (43a)instead of compound (41c); and according to Example 41(5),3-{3-(trifluoromethyl)-1-[(2-(trimethylsilyl)ethoxy)methyl]-1H-pyrrolo[2,3-b]pyridine}quinoline(82%) was prepared as a colorless oily substance using4-chloro-3-(trifluoromethyl)-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrrolo[2,3-b]pyridineinstead of compound (41d). According to Example 41(6), compound (43b)(75%) was prepared as a white solid using3-{3-(trifluoromethyl)-1-[(2-(trimethylsilyl)ethoxy)methyl]-1H-pyrrolo[2,3-b]pyridine}quinolineinstead of compound (41e).

¹H-NMR (CDCl₃) δ 9.12 (1H, d, J=2.2 Hz), 8.29 (1H, d, J=5.1 Hz), 8.26(1H, d, J=2.2 Hz), 8.20 (1H, d, J=9.0 Hz), 7.96 (1H, J=3.9 Hz),7.81-7.77 (1H, m), 7.66-7.63 (1H, m), 7.36 (1H, s), 7.15 (1H, d, J=5.1Hz); LRMS (ESI) m/z 314 [M+H]⁺.

Example 43(3)2-Bromo-4-{3-(trifluoromethyl)-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrile(43c)

According to Example 1(5), compound (43c) (39%) was prepared as a whitesolid using compound (43b) instead of compound (1d).

¹H-NMR (CDCl₃) δ 8.97 (1H, d, J=1.7 Hz), 8.58 (1H, d, J=4.6 Hz), 8.33(1H, d, J=2.2 Hz), 8.25-8.21 (2H, m), 8.02-7.98 (2H, m), 7.91-7.86 (2H,m), 7.84-7.80 (1H, m), 7.67-7.63 (1H, m), 7.31 (1H, d, J=4.9 Hz); LRMS(ESI) m/z 494 [M+H]⁺.

Example 43(4)2-(Trans-4-hydroxycyclohexylamino)-4-{4-(quinolin-3-yl)-3-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(43)

According to Example 1(6), a crude product of2-(trans-4-hydroxycyclohexylamino)-4-{4-(quinolin-3-yl)-3-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrilewas prepared using (43c) instead of compound (1e) and was used in thesubsequent reaction without being purified. According to Example 1(7),compound (43) (the second stage yield: 50%) was prepared as a whitesolid using2-(trans-4-hydroxycyclohexylamino)-4-{4-(quinolin-3-yl)-3-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 8.94 (1H, d, J=1.7 Hz), 8.66 (1H, s), 8.56 (1H, d,J=8.5 Hz), 8.46 (1H, s), 8.41 (1H, d, J=7.3 Hz), 8.12 (1H, d, J=8.5 Hz),8.06 (1H, d, J=8.5 Hz), 7.92 (1H, brs), 7.88-7.84 (1H, m), 7.79 (1H, d,J=7.8 Hz), 7.72-7.68 (1H, m), 7.41 (1H, d, J=4.9 Hz), 7.27 (1H, s), 7.22(1H, brs), 6.98 (1H, dd, J=8.5, 1.2 Hz), 4.54 (1H, d, J=3.7 Hz),3.52-3.38 (2H, m), 2.08-2.05 (2H, m), 1.84-1.82 (2H, m), 1.37-1.18 (4H,m); LRMS (ESI) m/z 546 [M+H]⁺.

Example 44Trans-4-{2-carbamoyl-5-{4-(quinolin-3-yl)-3-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridin-1-yl}phenylamino}cyclohexyl-2-aminoacetatedimethanesulfonate (44)

According to Example 42, compound (44) (the third stage yield: 57%) wasprepared as a white solid using compound (43) instead of compound (41).

¹H-NMR (DMSO-d₆) δ 9.00 (1H, s), 8.67 (1H, s), 8.57-8.54 (2H, m),8.16-8.09 (3H, m), 7.96 (1H, brs), 7.92-7.87 (1H, m), 7.81 (1H, d, J=8.5Hz), 7.76-7.72 (1H, m), 7.43 (1H, d, J=4.9 Hz), 7.29 (1H, d, J=1.7 Hz),7.27 (1H, brs), 7.01 (1H, dd, J=8.4, 1.8 Hz), 4.89-4.84 (1H, m),3.83-3.79 (1H, m), 2.31 (6H, s), 2.14-2.12 (2H, m), 1.98-1.96 (2H, m),1.63-1.55 (2H, m), 1.46-1.37 (2H, m); LRMS (ESI) m/z 603 [M+H]⁺.

Example 452-(Trans-4-hydroxycyclohexylamino)-4-{3-propyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(45) Example 45(1) Tert-butyl 3-butylpyridin-2-ylcarbamate (45a)

According to Example 40(1), compound (45a) (87%) was prepared as a whitesolid using propyl iodide instead of methyl iodide.

¹H-NMR (CDCl₃) δ 8.28 (1H, d, J=4.6 Hz), 7.52 (1H, d, J=7.6 Hz), 7.05(1H, dd, J=7.6, 4.9 Hz), 6.71 (1H, brs), 2.61 (2H, t, J=7.8 Hz),1.63-1.55 (2H, m), 1.51 (9H, s), 1.42-1.32 (2H, m), 0.94 (3H, t, J=7.3Hz); LRMS (ESI) m/z 251 [M+H]⁺.

Example 45(2) 3-Propyl-1H-pyrrolo[2,3-b]pyridine (45b)

According to Example 40(2), compound (45b) (99%) was prepared as a whitesolid using compound (45a) instead of compound (40a).

¹H-NMR (CDCl₃) δ 10.45 (1H, brs), 8.30 (1H, dd, J=4.9, 1.5 Hz), 7.93(1H, dd, J=8.1, 1.5 Hz), 7.13 (1H, s), 7.06 (1H, dd, J=7.8, 4.9 Hz),2.73 (2H, t, J=7.6 Hz), 1.78-1.69 (2H, m), 0.99 (3H, t, J=7.3 Hz); LRMS(ESI) m/z 161 [M+H]⁺.

Example 45(3) 4-Chloro-3-propyl-1H-pyrrolo[2,3-b]pyridine (45c)

According to Example 1(2), a crude product of3-propyl-1H-pyrrolo[2,3-b]pyridine 7-oxide m-chlorobenzoic acid salt wasprepared using compound (45b) instead of compound (1a) and was used inthe subsequent reaction without being purified. According to Example1(3), compound (45c) (the second stage yield: 14%) was prepared as awhite solid using 3-propyl-1H-pyrrolo[2,3-b]pyridine 7-oxidem-chlorobenzoic acid salt instead of compound (1b).

¹H-NMR (CDCl₃) δ 9.89 (1H, brs), 8.12 (1H, d, J=5.1 Hz), 7.11 (1H, s),7.05 (1H, d, J=5.4 Hz), 2.90 (2H, t, J=7.6 Hz), 1.78-1.68 (2H, m), 1.01(3H, t, J=7.3 Hz); LRMS (ESI) m/z 195 [M+H]⁺.

Example 45(4)4-Chloro-3-propyl-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrrolo[2,3-b]pyridine(45d)

According to Example 41(4), compound (45d) (82%) was prepared as acolorless oily substance using compound (45c) instead of (41c).

¹H-NMR (CDCl₃) δ 8.14 (1H, d, J=5.1 Hz), 7.12 (1H, s), 7.04 (1H, d,J=5.1 Hz), 5.61 (2H, s), 3.51 (2H, t, J=8.1 Hz), 2.89 (2H, t, J=7.6 Hz),1.68-1.77 (2H, m), 1.01 (3H, t, J=7.3 Hz), 0.90 (2H, t, J=8.3 Hz), −0.07(9H, s); LRMS (ESI) m/z 325 [M+H]⁺.

Example 45(5)3-{3-Propyl-1-[(2-(trimethylsilyl)ethoxy)methyl]-1H-pyrrolo[2,3-b]pyridine}quinoline(45e)

According to Example 41(5), compound (45e) (75%) was prepared as acolorless oily substance using (45d) instead of compound (41d).

¹H-NMR (CDCl₃) δ 9.05 (1H, d, J=2.0 Hz), 8.39 (1H, d, J=4.9 Hz), 8.25(1H, d, J=2.2 Hz), 8.21 (1H, d, J=8.3 Hz), 7.91 (1H, d, J=8.3 Hz),7.82-7.78 (1H, m), 7.62-7.66 (1H, m), 7.20 (1H, s), 7.05 (1H, d, J=4.9Hz), 5.72 (2H, s), 3.58-3.62 (2H, m), 2.32 (2H, t, J=7.6 Hz) 1.22-1.17(2H, m), 0.97-0.93 (2H, m), 0.55 (3H, t, J=7.4 Hz), 0.44 (9H, s); LRMS(ESI) m/z 418 [M+H]⁺.

Example 45(6) 3-{3-Propyl-1H-pyrrolo[2,3-b]pyridin-4-yl}quinoline (45f)

According to Example 41(6), compound (45f) (71%) was prepared as a whitesolid using (45e) instead of compound (41e).

¹H-NMR (CDCl₃) δ 9.07 (1H, d, J=2.2 Hz), 8.38 (1H, d, J=4.9 Hz), 8.26(1H, d, J=2.2 Hz), 8.21 (1H, d, J=8.1 Hz), 7.92-7.90 (1H, m), 7.82-7.78(1H, m), 7.66-7.62 (1H, m), 7.18 (1H, s), 7.06 (1H, d, J=4.9 Hz), 2.34(2H, t, J=7.3 Hz), 1.25-1.15 (2H, m), 0.55 (3H, t, J=7.3 Hz); LRMS (ESI)m/z 288 [M+H]⁺.

Example 45(7)2-Bromo-4-{3-propyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrile(45h)

According to Example 1(5), compound (45h) (88%) was prepared as a whitesolid using compound (45f) instead of compound (1d).

¹H-NMR (CDCl₃) δ 9.04 (1H, d, J=2.2 Hz), 8.46 (1H, d, J=4.9 Hz), 8.40(1H, d, J=2.0 Hz), 8.25 (1H, d, J=2.0 Hz), 8.22 (1H, d, J=8.8 Hz), 8.10(1H, dd, J=8.5, 2.2 Hz), 7.94-7.91 (1H, m), 7.85-7.78 (2H, m), 7.68-7.64(1H, m), 7.39 (1H, s), 7.17 (1H, d, J=4.9 Hz), 2.35-2.31 (2H, m),1.29-1.20 (2H, m), 0.57 (3H, t, J=7.3 Hz); LRMS (ESI) m/z 468 [M+H]⁺.

Example 45(8)2-(Trans-4-hydroxycyclohexylamino-4-{3-propyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(45)

According to Example 1(6),2-(trans-4-hydroxycyclohexylamino)-4-{3-propyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrile(36%) was prepared as a white solid using compound (45h) instead ofcompound (1e). Subsequently, according to Example 1(7), compound (45)(90%) was prepared as a white solid using2-(trans-4-hydroxycyclohexylamino)-4-{3-propyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.04 (1H, d, J=2.0 Hz), 8.54 (1H, d, J=1.7 Hz),8.42-8.39 (2H, m), 8.14-8.10 (2H, m), 7.87-7.83 (3H, m), 7.76-7.69 (2H,m), 7.42 (1H, d, J=1.5 Hz), 7.24 (1H, d, J=4.6 Hz), 7.12 (1H, s), 7.03(1H, dd, J=8.4, 1.3 Hz), 4.55 (1H, d, J=3.9 Hz), 3.53-3.47 (1H, m),3.44-3.36 (1H, m), 2.31 (2H, t, J=3.9 Hz), 2.11-2.08 (2H, m), 1.87-1.83(2H, m), 1.39-1.20 (4H, m), 1.12-1.03 (2H, m), 0.39 (3H, t, J=7.2 Hz);LRMS (ESI) m/z 520 [M+H]⁺.

Example 462-(Trans-4-hydroxycyclohexylamino)-4-{3-vinyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(46) Example 46(1) Tert-butyl 3-(3-methoxypropyl)pyridin-2-ylcarbamate(46a)

According to Example 40(1), compound (46a) (96%) was prepared as a whitesolid using 1-chloro-2-methoxyethane instead of methyl iodide.

¹H-NMR (CDCl₃) δ 8.35 (1H, dd, J=4.8, 1.8 Hz), 7.81 (1H, brs), 7.46 (1H,dd, J=7.6, 2.0 Hz), 6.98 (1H, dd, J=7.4, 4.8 Hz), 3.39 (3H, s), 3.31(2H, t, J=5.9 Hz), 2.70 (2H, t, J=7.0 Hz), 1.91-1.85 (2H, m), 1.53 (9H,s); LRMS (ESI) m/z 267 [M+H]⁺.

Example 46(2) 3-(2-Methoxyethyl)-1H-pyrrolo[2,3-b]pyridine (46b)

According to Example 40(2), compound (46b) (88%) was prepared as a whitesolid using compound (46a) instead of compound (40a).

¹H-NMR (CDCl₃) δ 8.29 (1H, d, J=3.9 Hz), 7.95-7.92 (1H, m), 7.16 (1H,s), 7.07 (1H, dd, J=7.8, 4.6 Hz), 3.68 (2H, t, J=6.8 Hz), 3.39 (3H, s),3.04-3.00 (2H, m); LRMS (ESI) m/z 177 [M+H]⁺.

Example 46(3) 2-{4-Chloro-1H-pyrrolo[2,3-b]pyridin-3-yl}ethanol (46c)

According to Example 1(2), a crude product of3-(2-methoxyethyl)-1H-pyrrolo[2,3-b]pyridine 7-oxide m-chlorobenzoicacid salt was prepared using compound (46b) instead of compound (1a) andwas used in the subsequent reaction without being purified. According toExample 1(3), compound (46c) (the second stage yield: 10%) was preparedas a white solid using 3-(2-methoxyethyl)-1H-pyrrolo[2,3-b]pyridine7-oxide m-chlorobenzoic acid salt instead of compound (1b).

¹H-NMR (CDCl₃) δ 9.76 (1H, brs), 8.18 (1H, d, J=5.1 Hz), 7.28-7.26 (1H,m), 7.09 (1H, d, J=5.1 Hz), 3.82 (2H, t, J=7.1 Hz), 3.40 (2H, t, J=7.1Hz); LRMS (ESI) m/z 197 [M+H]⁺.

Example 46(4)2-Bromo-4-{3-vinyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrile(46d)

According to Example 1(4), a crude product of3-{3-vinyl-1H-pyrrolo[2,3-b]pyridin-4-yl}quinoline was prepared usingcompound (46c) instead of compound (1c) and was used in the subsequentreaction without being purified. According to Example 1(5), (46d) (thesecond stage yield: 8%) was prepared as a white solid using3-{3-vinyl-1H-pyrrolo[2,3-b]pyridin-4-yl}quinoline instead of compound(1d).

¹H-NMR (CDCl₃) δ 9.07 (1H, d, J=1.7 Hz), 8.49 (1H, d, J=4.9 Hz), 8.41(1H, d, J=2.2 Hz), 8.30 (1H, d, J=2.2 Hz), 8.22 (1H, d, J=8.5 Hz),8.12-8.09 (1H, m), 7.93-7.91 (1H, m), 7.85-7.81 (2H, m), 7.72 (1H, s),7.66 (1H, dd, J=7.9, 7.2 Hz), 7.25-7.24 (1H, m), 6.25-6.17 (1H, m), 5.48(1H, d, J=17.3 Hz), 5.01 (1H, d, J=11.2 Hz); LRMS (ESI) m/z 452 [M+H]⁺.

Example 46(5)2-(Trans-4-hydroxycyclohexylamino)-4-{3-vinyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(46)

According to Example 1(6), a crude product of2-(trans-4-hydroxycyclohexylamino)-4-{3-vinyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrilewas prepared using (46d) instead of compound (1e) and was used in thesubsequent reaction without being purified. According to Example 1(7),compound (46) (the second stage yield: 15%) was prepared as a whitesolid using2-(trans-4-hydroxycyclohexylamino)-4-{3-vinyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.01 (1H, d, J=2.2 Hz), 8.54 (1H, d, J=2.0 Hz),8.44-8.41 (2H, m), 8.33 (1H, s), 8.15-8.09 (2H, m), 7.88-7.84 (2H, m),7.71 (1H, d, J=8.5 Hz), 7.73-7.69 (1H, m), 7.42 (1H, d, J=1.7 Hz), 7.31(1H, d, J=4.9 Hz), 7.16 (1H, brs), 7.05 (1H, dd, J=8.5, 1.5 Hz), 6.14(1H, dd, J=17.3, 11.0 Hz), 5.53 (1H, d, J=17.3 Hz), 4.90 (1H, d, J=11.0Hz), 4.55 (1H, d, J=4.4 Hz), 3.53-3.47 (1H, m), 3.44-3.39 (1H, m),2.11-2.08 (2H, m), 1.86-1.84 (2H, m), 1.38-1.20 (4H, m); LRMS (ESI) m/z504 [M+H]⁺.

Example 472-(Trans-4-hydroxycyclohexylamino)-4-{4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(47) Example 47(1) 4-Chloro-1H-pyrrolo[2,3-b]pyridine (47a)

According to Example 1(2), a crude product of 1H-pyrrolo[2,3-b]pyridine7-oxide m-chlorobenzoic acid salt was prepared using1H-pyrrolo[2,3-b]pyridine instead of compound (1a) and was used in thesubsequent reaction without being purified. According to Example 1(3),compound (47a) (the second stage yield: 65%) was prepared as a whitesolid using 1H-pyrrolo[2,3-b]pyridine 7-oxide m-chlorobenzoic acid saltinstead of the compound.

¹H-NMR (CDCl₃) δ 11.65 (1H, brs), 8.23 (1H, d, J=5.4 Hz), 7.43 (1H, d,J=3.4 Hz), 7.14 (1H, d, J=5.4 Hz), 6.63 (1H, d, J=3.4 Hz); LRMS (ESI)m/z 153 [M+H]⁺.

Example 47(2) 3-{1H-Pyrrolo[2,3-b]pyridin-4-yl}quinoline (57b)

According to Example 1(4), compound (47b) (44%) was prepared as a whitesolid using compound (47a) instead of compound (1c).

¹H-NMR (DMSO-d₆) δ 11.92 (1H, brs), 9.30 (1H, d, J=2.2 Hz), 8.77 (1H, d,J=2.2 Hz), 8.36 (1H, d, J=4.9 Hz), 8.15 (1H, d, J=8.1 Hz), 8.10 (1H, d,J=8.5 Hz), 7.85-7.81 (1H, m), 7.68 (1H, t, J=7.4 Hz), 7.62 (1H, d, J=3.4Hz), 7.40 (1H, d, J=4.9 Hz), 6.75 (1H, d, J=3.4 Hz); LRMS (ESI) m/z 246[M+H]⁺.

Example 47(3)2-Bromo-4-{4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrile(47c)

According to Example 1(5), compound (47c) (89%) was prepared as a whitesolid using compound (47b) instead of compound (1d).

¹H-NMR (DMSO-d₆) δ 9.30-9.29 (1H, m), 8.82-8.81 (1H, m), 8.78-8.77 (1H,m), 8.57-8.56 (1H, m), 8.44-8.41 (1H, m), 8.36-8.35 (1H, m), 8.19-8.11(3H, m), 7.89-7.84 (1H, m), 7.74-7.70 (1H, m), 7.67-7.65 (1H, m),7.14-7.13 (1H, m); LRMS (ESI) m/z 426 [M+H]⁺.

Example 47(4)2-(Trans-4-hydroxycyclohexylamino)-4-{4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrile(47d)

According to Example 1(6), compound (47d) (670) was prepared as a whitesolid using compound (47c) instead of compound (1e).

¹H-NMR (CDCl₃) δ 9.30 (1H, d, J=2.2 Hz), 8.50 (2H, dd, J=9.4, 3.5 Hz),8.21 (1H, d, J=8.3 Hz), 7.95 (1H, d, J=8.1 Hz), 7.83-7.79 (1H, m),7.69-7.64 (2H, m), 7.53 (1H, d, J=8.5 Hz), 7.46 (1H, d, J=1.7 Hz), 7.38(1H, d, J=5.1 Hz), 7.05-7.03 (1H, m), 6.89 (1H, d, J=3.7 Hz), 4.56 (1H,d, J=7.6 Hz), 3.77-3.72 (1H, m), 3.50-3.43 (1H, m), 2.28-2.24 (2H, m),2.10-2.07 (2H, m), 1.53-1.34 (4H, m); LRMS (ESI) m/z 460 [M+H]⁺.

Example 47 (5)2-(Trans-4-hydroxycyclohexylamino)-4-{4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(47)

According to Example 1(7), compound (47) (79%) was prepared as a whitesolid using compound (47d) instead of compound (1f). ¹H-NMR (DMSO-d₆)δ9.31 (1H, d, J=1.7 Hz), 8.80 (1H, s), 8.47 (1H, d, J=4.9 Hz), 8.41 (1H,d, J=7.1 Hz), 8.18-8.11 (3H, m), 7.88-7.84 (2H, m), 7.77 (1H, d, J=8.5Hz), 7.73-7.69 (1H, m), 7.56 (1H, d, J=4.9 Hz), 7.40 (1H, s), 7.15 (1H,brs), 7.06 (1H, d, J=8.3 Hz), 7.00 (1H, d, J=3.7 Hz), 4.55 (1H, d, J=3.9Hz), 3.53-3.45 (1H, m), 3.43-3.36 (1H, m), 2.11-2.08 (2H, m), 1.86-1.84(2H, m), 1.38-1.19 (4H, m); LRMS (ESI) m/z 478 [M+H]⁺.

Example 482-(Propylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(48)

According to Example 1(6), a crude product of2-(propylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrilewas prepared using compound (40f) instead of compound (1e) and usingn-propylamine instead of trans-aminocyclohexanol and was used in thesubsequent reaction without being purified. According to Example 1(7),compound (48) (the second stage yield: 46%) was prepared as a whitesolid using2-(propylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.07 (1H, d, J=2.2 Hz), 8.57 (1H, d, J=1.7 Hz),8.48-8.45 (1H, m), 8.42 (1H, d, J=4.6 Hz), 8.14 (2H, d, J=8.5 Hz), 7.92(1H, s), 7.88-7.84 (2H, m), 7.78 (1H, d, J=8.8 Hz), 7.73-7.70 (1H, m),7.29 (1H, d, J=2.0 Hz), 7.26 (1H, d, J=4.9 Hz), 7.15-7.12 (2H, m),3.20-3.15 (2H, m), 1.93 (3H, s), 1.71-1.62 (2H, m), 1.00 (3H, t, J=7.3Hz); LRMS (ESI) m/z 436 [M+H]⁺.

Example 492-(Pentylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(49)

According to Example 1(6), a crude product of2-(pentylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrilewas prepared using compound (40f) instead of compound (1e) and usingn-pentylamine instead of trans-aminocyclohexanol and was used in thesubsequent reaction without being purified. According to Example 1(7),compound (49) (the second stage yield: 55%) was prepared as a whitesolid using2-(pentylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.07 (1H, d, J=2.2 Hz), 8.56 (1H, d, J=2.0 Hz),8.47-8.44 (1H, m), 8.42 (1H, d, J=4.9 Hz), 8.14 (2H, d, J=8.8 Hz), 7.92(1H, s), 7.88-7.84 (2H, m), 7.78 (1H, d, J=8.8 Hz), 7.73-7.70 (1H, m),7.30 (1H, d, J=2.0 Hz), 7.26 (1H, d, J=4.6 Hz), 7.14-7.11 (2H, m),3.22-3.18 (2H, m), 1.93 (3H, s), 1.69-1.62 (2H, m), 1.42-1.34 (4H, m),0.91 (3H, t, J=7.1 Hz); LRMS (ESI) m/z 464 [M+H]⁺.

Example 502-(Cyclopropylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(50)

According to Example 1(6), a crude product of2-(cyclopropylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrilewas prepared using compound (40f) instead of compound (1e) and usingcyclopropylamine instead of trans-aminocyclohexanol and was used in thesubsequent reaction without being purified. According to Example 1(7),compound (50) (the second stage yield: 15%) was prepared as a whitesolid using2-(cyclopropylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.08 (1H, d, J=2.4 Hz), 8.57 (1H, d, J=2.2 Hz), 8.53(1H, s), 8.43 (1H, d, J=4.6 Hz), 8.13 (2H, d, J=8.8 Hz), 7.89-7.84 (3H,m), 7.78 (1H, d, J=8.5 Hz), 7.73-7.69 (2H, m), 7.27 (1H, d, J=4.9 Hz),7.20-7.17 (2H, m), 1.93 (3H, s), 0.83-0.79 (2H, m), 0.51-0.47 (2H, m);LRMS (ESI) m/z 434 [M+H]⁺.

Example 512-(Cyclopentylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(51)

According to Example 1(6), a crude product of2-(cyclopentylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrilewas prepared using compound (40f) instead of compound (1e) and usingcyclopentylamine instead of trans-aminocyclohexanol and was used in thesubsequent reaction without being purified. According to Example 1(7),compound (51) (the second stage yield: 36%) was prepared as a whitesolid using2-(cyclopentylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.07 (1H, d, J=2.2 Hz), 8.57 (1H, d, J=2.0 Hz), 8.51(1H, d, J=6.3 Hz), 8.43 (1H, d, J=4.6 Hz), 8.14 (2H, d, J=8.8 Hz), 7.90(1H, s), 7.88-7.84 (2H, m), 7.77 (1H, d, J=8.54 Hz), 7.73-7.70 (1H, m),7.35 (1H, d, J=2.2 Hz), 7.27 (1H, d, J=4.6 Hz), 7.14 (1H, brs), 7.10(1H, dd, J=8.5, 2.0 Hz), 3.93-3.86 (1H, m), 2.09-2.04 (2H, m), 1.93 (3H,s), 1.71-1.62 (4H, m), 1.53-1.47 (2H, m); LRMS (ESI) m/z 462 [M+H]⁺.

Example 522-(Cyclohexylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(52)

According to Example 1(6), a crude product of2-(cyclohexylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrilewas prepared using compound (40f) instead of compound (1e) and usingcyclohexylamine instead of trans-aminocyclohexanol and was used in thesubsequent reaction without being purified. According to Example 1(7),compound (52) (the second stage yield: 25%) was prepared as a whitesolid using2-(cyclohexylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.07 (1H, d, J=2.2 Hz), 8.57 (1H, d, J=2.2 Hz), 8.52(1H, d, J=7.6 Hz), 8.41 (1H, d, J=4.9 Hz), 8.14 (2H, d, J=8.3 Hz), 7.90(1H, s), 7.88-7.84 (2H, m), 7.77 (1H, d, J=8.8 Hz), 7.74-7.70 (1H, m),7.40 (1H, d, J=2.0 Hz), 7.27 (1H, d, J=4.9 Hz), 7.13 (1H, brs), 7.05(1H, dd, J=2.0, 8.5 Hz), 3.51-3.43 (1H, m), 2.03-1.99 (2H, m), 1.93 (3H,s), 1.73-1.69 (2H, m), 1.60-1.56 (1H, m), 1.46-1.38 (2H, m), 1.34-1.28(3H, m); LRMS (ESI) m/z 476 [M+H]⁺.

Examples 53 and 542-(Tetrahydro-2H-pyran-4-ylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(53)4-{3-Methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(54)

According to Example 1(6), a crude product of2-(tetrahydro-2H-pyran-4-ylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrilewas prepared using compound (40f) instead of compound (1e) and usingtetrahydro-2H-pyran-4-amine instead of trans-aminocyclohexanol and wasused in the subsequent reaction without being purified. According toExample 1(7), (53) (the second stage yield: 4%) was prepared as a whitesolid using2-(tetrahydro-2H-pyran-4-ylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrileinstead of compound (1f). By this reaction, compound (54) (the secondstage yield: 21%) was prepared as a white solid.

Compound (53)

¹H-NMR (DMSO-d₆) δ 9.07 (1H, d, J=2.0 Hz), 8.56-8.53 (2H, m), 8.41 (1H,d, J=4.9 Hz), 8.14 (2H, d, J=8.5 Hz), 7.91-7.84 (3H, m), 7.79 (1H, d,J=8.8 Hz), 7.74-7.70 (1H, m), 7.42 (1H, d, J=1.7 Hz), 7.27-7.26 (1H, m),7.18 (1H, brs), 7.11 (1H, dd, J=8.5, 1.7 Hz), 3.90-3.86 (2H, m),3.74-3.65 (1H, m), 3.53-3.48 (2H, m), 2.09-2.04 (2H, m), 1.93 (3H, s),1.49-1.40 (2H, m); LRMS (ESI) m/z 478 [M+H]⁺.

Compound (54)

¹H-NMR (DMSO-d₆) δ 9.06 (1H, s), 8.56 (1H, s), 8.43 (1H, d, J=4.4 Hz),8.13-8.04 (7H, m), 7.94 (1H, s), 7.87-7.83 (1H, m), 7.72-7.68 (1H, m),7.40 (1H, brs), 7.28 (1H, d, J=4.6 Hz), 1.92 (3H, s); LRMS (ESI) m/z 379[M+H]⁺.

Example 552-(4-Hydroxybutylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(55)

According to Example 1(6), a crude product of2-(4-hydroxybutylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrilewas prepared using compound (40f) instead of compound (1e) and using4-amino-1-butanol instead of trans-aminocyclohexanol and was used in thesubsequent reaction without being purified. According to Example 1(7),compound (55) (the second stage yield: 35%) was prepared as a whitesolid using2-(4-hydroxybutylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.06 (1H, d, J=2.2 Hz), 8.55 (1H, d, J=2.2 Hz),8.44-8.41 (2H, m), 8.12 (2H, d, J=8.8 Hz), 7.90 (1H, s), 7.87-7.83 (2H,m), 7.76 (1H, d, J=8.5 Hz), 7.72-7.68 (1H, m), 7.28-7.24 (2H, m),7.14-7.11 (2H, m), 4.45 (1H, t, J=5.2 Hz), 3.48-3.43 (2H, m), 3.23-3.18(2H, m), 1.91 (3H, s), 1.70-1.63 (2H, m), 1.58-1.51 (2H, m); LRMS (ESI)m/z 466 [M+H]⁺.

Example 562-(5-Hydroxypentylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(56)

According to Example 1(6), a crude product of2-(5-hydroxypentylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrilewas prepared using compound (40f) instead of compound (1e) and using5-amino-1-pentanol instead of trans-aminocyclohexanol and was used inthe subsequent reaction without being purified. According to Example1(7), compound (56) (the second stage yield: 31%) was prepared as awhite solid using2-(5-hydroxypentylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.05 (1H, d, J=2.2 Hz), 8.55 (1H, d, J=2.2 Hz),8.45-8.40 (2H, m), 8.12 (2H, d, J=8.5 Hz), 7.90 (1H, s), 7.87-7.83 (2H,m), 7.76 (1H, d, J=8.5 Hz), 7.72-7.68 (1H, m), 7.29 (1H, d, J=2.0 Hz),7.25 (1H, d, J=4.9 Hz), 7.13-7.10 (2H, m), 4.37 (1H, t, J=5.1 Hz),3.43-3.39 (2H, m), 3.21-3.16 (2H, m), 1.91 (3H, s), 1.68-1.61 (2H, m),1.52-1.38 (4H, m); LRMS (ESI) m/z 480 [M+H]⁺.

Example 572-[2-(2-Hydroxyethoxy)ethylamino]-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(57)

According to Example 1(6), a crude product of2-[2-(2-hydroxyethoxy)ethylamino]-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrilewas prepared using (40f) instead of compound (1e) and using2-(2-aminoethoxy)ethanol instead of trans-aminocyclohexanol and was usedin the subsequent reaction without being purified. According to Example1(7), compound (57) (the second stage yield: 18%) was prepared as awhite solid using2-[2-(2-hydroxyethoxy)ethylamino]-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.06 (1H, d, J=2.2 Hz), 8.55 (1H, d, J=2.2 Hz),8.51-8.49 (1H, m), 8.41 (1H, d, J=4.6 Hz), 8.12 (2H, d, J=8.8 Hz), 7.91(1H, s), 7.87-7.83 (2H, m), 7.76 (1H, d, J=8.5 Hz), 7.72-7.68 (1H, m),7.28 (1H, d, J=2.0 Hz), 7.25 (1H, d, J=4.6 Hz), 7.18-7.15 (2H, m), 4.58(1H, dd, J=5.6, 5.1 Hz), 3.68 (2H, t, J=5.5 Hz), 3.55-3.48 (4H, m),3.39-3.35 (2H, m), 1.91 (3H, s); LRMS (ESI) m/z 482 [M+H]⁺.

Example 582-(2-Hydroxy-2-methylpropylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(58)

According to Example 1(6), a crude product of2-(2-hydroxy-2-methylpropylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrilewas prepared using compound (40f) instead of compound (1e) and using1-amino-2-methylpropan-2-ol instead of trans-aminocyclohexanol and wasused in the subsequent reaction without being purified. According toExample 1(7), (58) (the second stage yield: 54%) was prepared as a whitesolid using2-(2-hydroxy-2-methylpropylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.05 (1H, d, J=2.2 Hz), 8.59-8.55 (2H, m), 8.41 (1H,d, J=4.6 Hz), 8.12 (2H, d, J=8.8 Hz), 7.89 (1H, s), 7.87-7.83 (2H, m),7.75 (1H, d, J=8.5 Hz), 7.72-7.68 (1H, m), 7.25 (1H, d, J=4.8 Hz), 7.20(1H, d, J=1.7 Hz), 7.15-7.12 (2H, m), 4.57 (1H, s), 3.10 (2H, d, J=4.9Hz), 1.91 (3H, s), 1.20 (6H, s); LRMS (ESI) m/z 466 [M+H]⁺.

Example 592-(3-Isopropoxypropylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(59)

According to Example 1(6), a crude product of2-(3-isopropoxypropylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrilewas prepared using (40f) instead of compound (1e) and using3-isopropoxypropylamine instead of trans-aminocyclohexanol and was usedin the subsequent reaction without being purified. According to Example1(7), compound (59) (the second stage yield: 38%) was prepared as awhite solid using2-(3-isopropoxypropylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.05 (1H, d, J=2.2 Hz), 8.55 (1H, d, J=2.2 Hz),8.46-8.43 (1H, m), 8.40 (1H, d, J=4.9 Hz), 8.12 (2H, d, J=8.8 Hz), 7.89(1H, s), 7.87-7.83 (2H, m), 7.76 (1H, d, J=8.8 Hz), 7.72-7.68 (1H, m),7.29 (1H, d, J=2.0 Hz), 7.25 (1H, d, J=4.9 Hz), 7.15-7.10 (2H, m),3.55-3.45 (3H, m), 3.28-3.24 (2H, m), 1.91 (3H, s), 1.85-1.79 (2H, m),1.07 (3H, s), 1.06 (3H, s); LRMS (ESI) m/z 494 [M+H]⁺.

Example 602-[3-(Isopropylamino)propylamino]-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(60)

According to Example 1(6), a crude product of2-[3-(isopropylamino)propylamino]-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrilewas prepared using (40f) instead of compound (1e) and using3-(isopropylamino)propylamine instead of trans-aminocyclohexanol and wasused in the subsequent reaction without being purified. According toExample 1(7), compound (60) (the second stage yield: 34%) was preparedas a white solid using2-[3-(isopropylamino)propylamino]-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (CDCl₃) δ 9.07 (1H, d, J=2.2 Hz), 8.44 (1H, d, J=4.9 Hz), 8.27(1H, d, J=2.2 Hz), 8.21 (1H, d, J=8.5 Hz), 8.10 (1H, s), 7.92 (1H, d,J=7.8 Hz), 7.81 (1H, dt, J=8.5, 3.5 Hz), 7.67-7.63 (1H, m), 7.52 (1H, d,J=8.5 Hz), 7.38 (1H, s), 7.15-7.11 (3H, m), 7.04 (1H, dd, J=8.4, 1.8Hz), 5.78 (1H, brs), 3.34-3.31 (2H, m), 2.87-2.76 (3H, m), 1.99 (3H, s),1.95-1.88 (2H, m), 1.08 (3H, s), 1.06 (3H, s); LRMS (ESI) m/z 493[M+H]⁺.

Example 612-(Trans-4-aminocyclohexylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(61)

According to Example 1(6), a crude product of2-(trans-4-aminocyclohexylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrilewas prepared using (40f) instead of compound (1e) and usingtrans-1,4-cyclohexanediamine instead of trans-aminocyclohexanol and wasused in the subsequent reaction without being purified. According toExample 1(7), compound (61) (the second stage yield: 62%) was preparedas a white solid using2-(trans-4-aminocyclohexylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.06 (1H, brs), 8.55 (1H, brs), 8.40-8.36 (2H, m),8.13-8.11 (2H, m), 7.90 (1H, s), 7.87-7.83 (2H, m), 7.76-7.69 (2H, m),7.41 (1H, brs), 7.25 (1H, d, J=4.4 Hz), 7.11 (1H, brs), 7.03 (1H, d,J=7.3 Hz), 3.46-3.40 (1H, m), 2.66-2.55 (1H, m), 2.16-2.04 (2H, m), 1,92 (3H, s), 1.84-1.75 (2H, m), 1.27-1.13 (4H, m); LRMS (ESI) m/z 491[M+H]⁺.

Example 622-(Trans-4-acetamidocyclohexylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(62)

Acetic anhydride (0.012 mL) and triethylamine (0.021 mL) were added to asolution of compound (61) (0.050 g) prepared in Example 61 indichloromethane (10 mL), followed by stirring at room temperature for 1hr. The solvent was distilled away under reduced pressure, and water wasadded to the residue. The precipitate was collected by filtration,washed by sprinkling water and ether, and dried under reduced pressureto obtain (62) (0.043 g, 78%) as a white solid.

¹H-NMR (DMSO-d₆) δ 9.06 (1H, brs), 8.55 (1H, brs), 8.39 (2H, d, J=4.2Hz), 8.14-8.11 (2H, m), 7.91-7.66 (5H, m), 7.46 (1H, brs), 7.26 (1H, d,J=4.2 Hz), 7.12 (1H, brs), 7.03-7.01 (1H, m), 3.60-3.53 (2H, m),2.16-2.13 (2H, m), 1.92 (3H, s), 1.87-1.84 (2H, m), 1.78 (3H, s),1.38-1.21 (4H, m); LRMS (ESI) m/z 533 [M+H]⁺.

Example 632-(Trans-4-methylsulfonamidocyclohexylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(63)

According to Example 62, compound (63) (17%) was prepared as a whitesolid using methanesulfonyl chloride instead of acetic anhydride andpurifying the residue by NH silica gel column chromatography(chloroform/methanol).

¹H-NMR (DMSO-d₆) δ 9.06 (1H, d, J=1.7 Hz), 8.55 (1H, d, J=2.2 Hz),8.40-8.38 (2H, m), 8.13 (2H, d, J=8.8 Hz), 7.91 (1H, s), 7.87-7.83 (2H,m), 7.75 (1H, d, J=8.8 Hz), 7.72-7.69 (1H, m), 7.40 (1H, s), 7.12 (1H,brs), 7.06-7.02 (2H, m), 3.40-3.36 (1H, m), 3.22-3.17 (1H, m), 2.92 (3H,s), 2.15-2.12 (2H, m), 1.97-1.94 (2H, m), 1.92 (3H, s), 1.46-1.38 (2H,m), 1.32-1.23 (2H, m); LRMS (ESI) m/z 567 [M+H]⁺.

Example 642-(Trans-2-aminocyclohexylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(64)

According to Example 1(6), a crude product of2-(trans-2-aminocyclohexylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrilewas prepared using (40f) instead of compound (1e) and usingtrans-1,2-cyclohexanediamine instead of trans-aminocyclohexanol and wasused in the subsequent reaction without being purified. According toExample 1(7), compound (64) (the second stage yield: 4%) was prepared asa white solid using2-(trans-2-aminocyclohexylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.05 (1H, d, J=2.2 Hz), 8.54 (1H, d, J=2.2 Hz), 8.46(1H, d, J=7.8 Hz), 8.40 (1H, d, J=4.9 Hz), 8.12 (2H, d, J=9.3 Hz),7.87-7.82 (3H, m), 7.75 (1H, d, J=8.5 Hz), 7.72-7.68 (1H, m), 7.41 (1H,d, J=1.5 Hz), 7.24 (1H, d, J=4.9 Hz), 7.14 (1H, brs), 7.07 (1H, dd,J=8.5, 1.7 Hz), 3.20-3.15 (1H, m), 2.61-2.56 (1H, m), 2.12 (1H, d, J=8.3Hz), 1.91 (3H, s), 1.86-1.83 (1H, m), 1.66-1.53 (2H, m), 1.36-1.21 (4H,m); LRMS (ESI) m/z 491 [M+H]⁺.

Example 652-(Furan-2-ylmethylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(65)

According to Example 1(6), a crude product of2-(furan-2-ylmethylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrilewas prepared using compound (40f) instead of compound (1e) and usingfurfurylamine instead of trans-aminocyclohexanol and was used in thesubsequent reaction without being purified. According to Example 1(7),compound (65) (the second stage yield: 32%) was prepared as a whitesolid using2-(furan-2-ylmethylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.06 (1H, d, J=2.2 Hz), 8.77-8.74 (1H, m), 8.55 (1H,d, J=2.0 Hz), 8.43 (1H, d, J=4.9 Hz), 8.12 (2H, d, J=8.5 Hz), 7.90-7.83(3H, m), 7.79 (1H, d, J=8.5 Hz), 7.72-7.68 (1H, m), 7.60 (1H, s), 7.43(1H, d, J=1.7 Hz), 7.27-7.22 (3H, m), 6.41 (2H, s), 4.48 (2H, d, J=5.6Hz), 1.91 (3H, s); LRMS (ESI) m/z 474 [M+H]⁺.

Example 662-(3,4-Methylenedioxybenzylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(66)

According to Example 1(6), a crude product of2-(3,4-methylenedioxybenzylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrilewas prepared using (40f) instead of compound (1e) and using3,4-methylenedioxybenzylamine instead of trans-aminocyclohexanol and wasused in the subsequent reaction without being purified. According toExample 1(7), compound (66) (the second stage yield: 38%) was preparedas a white solid using2-(3,4-methylenedioxybenzylamino)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.05 (1H, d, J=1.7 Hz), 8.81-8.78 (1H, m), 8.54 (1H,s), 8.39 (1H, d, J=4.6 Hz), 8.12 (2H, d, J=8.1 Hz), 7.90-7.77 (4H, m),7.72-7.68 (1H, m), 7.35 (1H, s), 7.25-7.13 (3H, m), 6.97 (1H, s),6.90-6.86 (2H, m), 5.97 (2H, s), 4.38 (2H, d, J=5.4 Hz), 1.89 (3H, s);LRMS (ESI) m/z 528 [M+H]⁺.

Example 672-(Trans-4-hydroxycyclohexylthio)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(67)

Trans-4-mercaptocyclohexanol (0.050 g),tris(dibenzylideneacetone)dipalladium(0) (0.008 g),4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (0.010 g), andN,N-diisopropylethylamine (0.116 mL) were added to a solution of (40f)(0.150 g) prepared in Example 40(6) in 1,4-dioxane (1.71 mL), followedby stirring under nitrogen flow at 120° C. for 6 hr. The reactionsolution was distributed between ethyl acetate and water, and theorganic layer was washed with saturated saline. The organic layer afterthe washing was dried over anhydrous sodium sulfate, and the solvent wasdistilled away. The residue was purified by neutral silica gel columnchromatography (n-hexane/ethyl acetate) to obtain a crude product of2-(trans-4-hydroxycyclohexylthio)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrile.Subsequently, an aqueous sodium hydroxide solution (4 M, 0.851 mL) and a30% hydrogen peroxide solution (0.193 mL) were added to a solution ofthis2-(trans-4-hydroxycyclohexylthio)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrilein DMSO (0.4 mL) and ethanol (1.6 mL) at room temperature, followed bystirring for 30 min. Water was added to the reaction solution, and theprecipitate was collected by filtration, washed by sprinkling water andether, and then dried under reduced pressure to obtain (67) (0.023 g,the second stage yield: 13%) as a white solid.

¹H-NMR (DMSO-d₆) δ 9.07 (1H, d, J=2.2 Hz), 8.56 (1H, d, J=2.0 Hz), 8.41(1H, d, J=2.0 Hz), 8.13 (2H, d, J=8.5 Hz), 7.95 (1H, s), 7.87-7.80 (3H,m), 7.73-7.66 (2H, m), 7.59 (1H, d, J=8.3 Hz), 7.39 (1H, brs), 7.30 (1H,d, J=4.9 Hz), 4.59 (1H, d, J=4.4 Hz), 3.46-3.42 (1H, m), 2.14-2.11 (2H,m), 1.93-1.88 (5H, m), 1.40-1.26 (4H, m); LRMS (ESI) m/z 509 [M+H]⁺.

Example 682-(4-Hydroxyphenylthio)-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(68)

According to Example 67, compound (68) (the second stage yield: 30%) wasprepared as a white solid using 4-mercaptophenol instead oftrans-4-mercaptocyclohexanol.

¹H-NMR (DMSO-d₆) δ 9.00 (1H, d, J=2.2 Hz), 8.50 (1H, d, J=1.7 Hz), 8.22(1H, d, J=4.9 Hz), 8.11-8.06 (2H, m), 7.93 (1H, brs), 7.85-7.81 (1H, m),7.70-7.63 (4H, m), 7.51 (1H, dd, J=8.3, 1.7 Hz), 7.45 (1H, brs), 7.35(2H, d, J=8.3 Hz), 7.19 (1H, d, J=4.6 Hz), 6.84 (2H, d, J=8.3 Hz), 1.83(3H, s); LRMS (ESI) m/z 503 [M+H]⁺.

Example 692-Bromo-4-{3-methyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(69)

According to Example 1(7), compound (69) (66%) was prepared as a whitesolid using compound (40f).

¹H-NMR (DMSO-d₆) δ 9.06 (1H, brs), 8.56 (1H, brs), 8.45 (1H, d, J=4.9Hz), 8.37 (1H, s), 8.12 (2H, d, J=8.5 Hz), 8.04 (1H, d, J=7.8 Hz),7.97-7.93 (2H, m), 7.87-7.83 (1H, m), 7.72-7.69 (1H, m), 7.60-7.58 (2H,m), 7.30 (1H, d, J=4.9 Hz), 1.91 (3H, s); LRMS (ESI) m/z 458 [M+H]⁺.

Example 702-(2-Aminocyclohexylamino)-4-{3-ethyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(70)

According to Example 1(6), a crude product of2-(2-aminocyclohexylamino)-4-{3-ethyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrilewas prepared using compound (41h) instead of compound (1e) and usingcyclohexane-1,2-diamine instead of trans-aminocyclohexanol and was usedin the subsequent reaction without being purified. According to Example1(7), compound (70) (the second stage yield: 57%) was prepared as awhite solid using2-(2-aminocyclohexylamino)-4-{3-ethyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.04 (1H, d, J=2.2 Hz), 8.54 (1H, s), 8.47 (1H, d,J=8.1 Hz), 8.39 (1H, d, J=4.6 Hz), 8.14-8.09 (2H, m), 7.87-7.67 (4H, m),7.45 (1H, s), 7.23 (1H, d, J=4.9 Hz), 7.03 (1H, d, J=8.4 Hz), 2.32 (1H,q, J=7.6 Hz), 2.14-2.10 (1H, m), 1.85-1.82 (1H, m), 1.63-1.56 (4H, m),1.29-1.09 (4H, m), 0.88 (3H, t, J=7.6 Hz); LRMS (ESI) m/z 505 [M+H]⁺.

Example 714-{3-Ethyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}-2-(1-methylpiperidin-4-ylamino)benzamide(71)

According to Example 1(6), a crude product of4-{3-ethyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}-2-(1-methylpiperidin-4-ylamino)benzonitrilewas prepared using compound (41h) instead of compound (1e) and using4-amino-1-methylpiperidine instead of trans-aminocyclohexanol and wasused in the subsequent reaction without being purified. According toExample 1(7), compound (71) (the second stage yield: 62%) was preparedas a white solid using4-{3-ethyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}-2-(1-methylpiperidin-4-ylamino)benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.06 (1H, d, J=2.2 Hz), 8.55 (1H, d, J=1.9 Hz), 8.41(1H, d, J=4.9 Hz), 8.16-8.11 (2H, m), 7.90-7.69 (4H, m), 7.46 (1H, d,J=1.9 Hz), 7.24 (1H, d, J=4.9 Hz), 7.05 (1H, dd, J=1.9, 6.8 Hz),3.52-3.41 (1H, m), 2.69-2.65 (2H, m), 2.38-2.29 (2H, m), 2.19 (3H, s),2.15-2.02 (2H, m), 1.53-1.43 (2H, m), 0.83 (3H, t, J=7.6 Hz); LRMS (ESI)m/z 505 [M+H]⁺.

Example 722-(Trans-4-aminocyclohexylamino)-4-{3-ethyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(72)

According to Example 1(6), a crude product of2-(trans-4-aminocyclohexylamino)-4-{3-ethyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrilewas prepared using compound (41h) instead of compound (1e) and usingtrans-cyclohexane-1,4-diamine instead of trans-aminocyclohexanol and wasused in the subsequent reaction without being purified. According toExample 1(7), a (the second stage yield: 57%) was prepared as a whitesolid using2-(trans-4-aminocyclohexylamino)-4-{3-ethyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.06 (1H, d, J=2.2 Hz), 8.56 (1H, d, J=1.6 Hz),8.42-8.38 (2H, m), 8.16-8.11 (2H, m), 7.89-7.84 (2H, m), 7.78-7.69 (2H,m), 7.59-7.47 (4H, m), 7.25 (1H, d, J=4.9 Hz), 7.02 (1H, d, J=8.4 Hz),2.34 (1H, q, J=7.3 Hz), 2.15-2.07 (2H, m), 1.87-1.79 (2H, m), 1.26-1.16(4H, m), 0.83 (3H, t, J=7.3 Hz); LRMS (ESI) m/z 505 [M+H]⁺.

Example 734-{3-Ethyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}-2-(2-morpholinoethylamino)benzamide(73)

According to Example 1(6), a crude product of4-{3-ethyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}-2-(2-morpholinoethylamino)benzonitrilewas prepared using compound (41h) instead of compound (1e) and usingN-(2-aminoethyl)morpholine instead of trans-aminocyclohexanol and wasused in the subsequent reaction without being purified. According toExample 1(7), compound (73) (the second stage yield: 58%) was preparedas a white solid using4-{3-ethyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}-2-(2-morpholinoethylamino)benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.06 (1H, d, J=2.2 Hz), 8.56 (1H, d, J=1.9 Hz), 8.52(1H, t, J=4.9 Hz), 8.42 (1H, d, J=4.9 Hz), 8.16-8.11 (2H, m), 7.89-7.83(2H, m), 7.78-7.69 (2H, m), 7.32 (1H, d, J=1.9 Hz), 7.25 (1H, d, J=4.9Hz), 7.15 (1H, dd, J=2.2, 6.5 Hz), 3.62-3.59 (4H, m), 2.64-2.60 (2H, m),2.33 (2H, q, J=7.3 Hz), 0.84 (3H, t, J=7.3 Hz); LRMS (ESI) m/z 521[M+H]⁺.

Example 744-{3-Ethyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}-2-(4-hydroxybutylamino)benzamide(74)

According to Example 1(6), a crude product of4-{3-ethyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}-2-(4-hydroxybutylamino)benzonitrilewas prepared using compound (41h) instead of compound (1e) and using4-amino-1-butanol instead of trans-aminocyclohexanol and was used in thesubsequent reaction without being purified. According to Example 1(7),compound (74) (the second stage yield: 38%) was prepared as a whitesolid using4-{3-ethyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}-2-(4-hydroxybutylamino)benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.06 (1H, s), 8.56 (1H, s), 8.45-8.42 (2H, m),8.16-8.13 (2H, m), 7.87-7.69 (2H, m), 7.56-7.52 (2H, m), 7.31 (1H, s),7.25 (1H, d, J=4.6 Hz), 7.13 (1H, d, J=7.8 Hz), 3.50-3.46 (2H, m),3.23-3.21 (2H, m), 2.33 (2H, q, J=7.3 Hz), 1.68-1.56 (4H, m), 0.83 (3H,t, J=7.3 Hz); LRMS (ESI) m/z 480 [M+H]⁺.

Example 754-{3-Ethyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}-2-{2-(ethylamino)ethylamino}benzamide(75)

According to Example 1(6), a crude product of4-{3-ethyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}-2-{2-(ethylamino)ethylamino}benzonitrilewas prepared using compound (41h) instead of compound (1e) and usingN-ethylethylenediamine instead of trans-aminocyclohexanol and was usedin the subsequent reaction without being purified. According to Example1(7), (75) (the second stage yield: 19%) was prepared as a white solidusing4-{3-ethyl-4-(quinolin-3-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}-2-{2-(ethylamino)ethylamino}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.04 (1H, d, J=2.2 Hz), 8.53 (1H, d, J=1.9 Hz),8.46-8.39 (2H, m), 8.14-8.09 (2H, m), 7.87-7.67 (4H, m), 7.30 (1H, d,J=2.2 Hz), 7.22 (1H, d, J=4.9 Hz), 7.11 (1H, dd, J=1.9, 6.8 Hz), 2.79(2H, t, J=6.1 Hz), 7.59 (2H, q, J=7.0 Hz), 2.31 (2H, q, J=7.3 Hz), 1.02(3H, t, J=7.0 Hz), 0.81 (3H, t, J=7.3 Hz); LRMS (ESI) m/z 479 [M+H]⁺.

Example 764-{3-Isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(piperidin-4-ylamino)-benzamide(76)

According to Example 1(6), tert-butyl4-{2-cyano-5-(3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl)phenylamino}piperidine-1-carboxylatewas prepared using (6d) instead of compound (1e) and using tert-butyl4-aminopiperidine-carboxylate instead of trans-4-hydroxycyclohexylamineand was used in the subsequent reaction without being purified.According to Example 1(7), tert-butyl4-[(2-carbamoyl-5-(3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl)phenylamino]piperidine-1-carboxylate(the second stage yield: 72%) was prepared using tert-butyl4-{2-cyano-5-(3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl)phenylamino}piperidine-1-carboxylateinstead of compound (1f).

Tert-butyl4-{2-carbamoyl-5-(3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl)phenylamino}piperidine-1-carboxylate(0.704 g) was dissolved in trifluoroacetic acid, followed by stirring atroom temperature for 1 hr. The reaction solution was distributed betweenchloroform and saturated sodium bicarbonate water. The organic layer waswashed with saturated saline and then dried over anhydrous sodiumsulfate. After distillation of the solvent, the residue was purified byneutral silica gel column chromatography (chloroform/methanol) to obtain(76) (0.600 g, 99%) as a white solid.

¹H-NMR (DMSO-d₆) δ: 9.13 (1H, d, J=1.95 Hz), 8.74 (1H, d, J=4.88 Hz),8.68 (1H, d, J=1.95 Hz), 8.50 (1H, d, J=7.32 Hz), 8.16 (1H, d, J=8.54Hz), 8.13 (1H, d, J=8.54 Hz), 7.89 (1H, td, J=7.44, 1.22 Hz), 7.89 (1H,d, J=1.22 Hz), 7.79 (1H, d, J=8.78 Hz), 7.73 (1H, t, J=7.44 Hz), 7.46(1H, dd, J=8.78, 1.95 Hz), 7.41 (1H, d, J=4.88 Hz), 7.15 (1H, s),3.49-3.41 (1H, m), 2.99-2.92 (3H, m), 2.61 (2H, t, J=10.37 Hz), 2.01(2H, d, J=10.37 Hz), 1.32 (2H, q, J=10.37 Hz), 1.04 (6H, d, J=6.83 Hz);LRMS (ESI) m/z 506 [M+H]⁺.

Example 772-(Acetylpiperidin-4-ylamino)-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-benzamide(77) Example 77(1)4-{3-Isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(piperidin-4-ylamino)benzonitrile(77a)

Tert-butyl4-{2-cyano-5-(3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl)phenylamino}piperidine-1-carboxylateobtained in Example 76 was dissolved in trifluoroacetic acid, followedby stirring at room temperature for 1 hr. The reaction solution wasdistributed between chloroform and saturated sodium bicarbonate water,and the organic layer was washed with saturated saline and then driedover anhydrous sodium sulfate. After distillation of the solvent, theresidue was purified by neutral silica gel column chromatography(chloroform/methanol) to obtain (77a) (the second stage yield: 56%) as awhite solid.

Example 77(2)2-(Acetylpiperidin-4-ylamino)-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-benzamide(77)

Compound (77a) (0.050 g) and triethylamine (0.017 mL) were dissolved inchloroform (1.0 mL), and acetyl chloride (0.017 mL) was added to theresulting mixture, followed by stirring at room temperature for 15 hr.The reaction solution was distributed between chloroform and water. Theorganic layer was washed with saturated saline and then dried overanhydrous sodium sulfate. The solvent was distilled away to obtain2-(acetylpiperidin-4-ylamino)-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile,which was used in the subsequent reaction without being purified.According to Example 1(7), compound (77) (the second stage yield: 68%)was prepared as a white solid using2-(acetylpiperidin-4-ylamino)-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ 9.14 (1H, d, J=1.95 Hz), 8.77 (1H, d, J=4.88 Hz),8.69 (1H, d, J=1.95 Hz), 8.60 (1H, d, J=7.32 Hz), 8.16 (1H, d, J=8.54Hz), 8.14 (1H, d, J=8.54 Hz), 7.94 (1H, d, J=1.22 Hz), 7.90 (1H, td,J=7.44, 1.22 Hz), 7.83 (1H, d, J=8.78 Hz), 7.74 (1H, t, J=7.44 Hz), 7.47(1H, dd, J=8.78, 1.95 Hz), 7.42 (1H, d, J=4.88 Hz), 7.15 (1H, s), 4.14(1H, d, J=13.66 Hz), 3.79 (1H, d, J=13.66 Hz), 3.65-3.58 (1H, m),3.02-2.95 (2H, m), 2.20-2.05 (2H, m), 2.03 (3H, s), 1.48 (1H, d, J=10.00Hz), 1.34 (1H, d, J=10.00 Hz), 1.06 (6H, d, J=6.83 Hz); LRMS (ESI) m/z548 [M+H]⁺.

Example 782-{1-(2,6-Dihydroxypyrimidine-4-carbonyl)piperidin-4-ylamino}-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(78)

Isoorotic acid (0.021 g), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimidehydrochloride (0.029 g), and 1-hydroxybenzotriazole monohydrate (0.016g) were added to a solution of compound (77a) (0.050 g) in DMF (1.0 mL),followed by stirring under argon flow at room temperature for 15 hr. Thereaction solution was distributed between ethyl acetate and water, andthe organic layer was washed with saturated saline. The organic layerafter the washing was dried over anhydrous sodium sulfate, and thesolvent was distilled away to obtain2-{1-(2,6-dihydroxypyrimidine-4-carbonyl)piperidin-4-ylamino}-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile,which was used in the subsequent reaction without being purified.According to Example 1(7), compound (78) (0.026 g, the second stageyield: 39%) was prepared as a white solid using2-{1-(2,6-dihydroxypyrimidine-4-carbonyl)piperidin-4-ylamino}-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ: 9.13 (1H, d, J=1.95 Hz), 8.76 (1H, d, J=4.88 Hz),8.68 (1H, d, J=1.95 Hz), 8.59 (1H, d, J=7.32 Hz), 8.17 (1H, d, J=8.54Hz), 8.14 (1H, d, J=8.54 Hz), 7.94 (1H, d, J=1.22 Hz), 7.90 (1H, td,J=7.44, 1.22 Hz), 7.83 (1H, d, J=8.78 Hz), 7.74 (1H, t, J=7.44 Hz), 7.63(2H, s), 7.47 (1H, dd, J=8.78, 1.95 Hz), 7.42 (1H, d, J=4.88 Hz), 7.15(1H, s), 4.15 (1H, d, J=13.66 Hz), 3.74-3.68 (2H, m), 3.06 (1H, t,J=13.66 Hz), 2.96 (1H, tt, J=6.83, 6.83 Hz), 2.12-2.05 (2H, m), 1.45(1H, d, J=10.00 Hz), 1.34 (1H, d, J=10.00 Hz), 1.06 (6H, d, J=6.83 Hz);LRMS (ESI) m/z 644 [M+H]⁺.

Example 792-{1-(2-Aminoacetyl)piperidin-4-ylamino}-4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(79)

N-(Tert-butoxycarbonyl)glycine (0.021 g),1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (0.029 g),and 1-hydroxybenzotriazole monohydrate (0.016 g) were added to asolution of compound (77a) (0.050 g) in DMF (1.0 mL), followed bystirring under argon flow at room temperature for 15 hr. The reactionsolution was distributed between ethyl acetate and water, and theorganic layer was washed with saturated saline. The organic layer afterthe washing was dried over anhydrous sodium sulfate, and then thesolvent was distilled away to obtain tert-butyl2-{4-(2-cyano-5-(3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl)phenylamino)piperidin-1-yl}-2-oxaethylcarbamate,which was used in the subsequent reaction without being purified.According to Example 1(7), tert-butyl2-{4-(2-carbamoyl-5-(3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl)phenylamino)piperidin-1-yl}-2-oxaethylcarbamatewas prepared using tert-butyl2-{4-(2-cyano-5-(3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl)phenylamino)piperidin-1-yl}-2-oxaethylcarbamateinstead of (1f) and was used in the subsequent reaction without beingpurified. Tert-butyl2-{4-(2-carbamoyl-5-(3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl)phenylamino)piperidin-1-yl}-2-oxaethylcarbamatewas dissolved in trifluoroacetic acid, followed by stirring at roomtemperature for 1 hr. The reaction solution was distributed betweenchloroform and saturated sodium bicarbonate water. The organic layer waswashed with saturated saline and then dried over anhydrous sodiumsulfate. After distillation of the solvent, the residue was purified byneutral silica gel column chromatography (chloroform/methanol) to obtaincompound (79) (0.035 g, the third stage yield: 55%) as a white solid.

¹H-NMR (DMSO-d₆) δ: 9.14 (1H, d, J=1.95 Hz), 8.77 (1H, d, J=4.88 Hz),8.69 (1H, d, J=1.95 Hz), 8.59 (1H, d, J=7.32 Hz), 8.17 (1H, d, J=8.54Hz), 8.14 (1H, d, J=8.54 Hz), 7.94 (1H, d, J=1.22 Hz), 7.90 (1H, td,J=7.44, 1.22 Hz), 7.83 (1H, d, J=8.78 Hz), 7.74 (1H, t, J=7.44 Hz), 7.47(1H, dd, J=8.78, 1.95 Hz), 7.42 (1H, d, J=4.88 Hz), 7.15 (1H, s), 4.15(1H, d, J=13.66 Hz), 3.74-3.68 (2H, m), 3.31 (2H, s), 3.06 (1H, t,J=13.66 Hz), 2.96 (1H, tt, J=6.83, 6.83 Hz), 2.12-2.05 (2H, m), 1.45(1H, d, J=10.00 Hz), 1.34 (1H, d, J=10.00 Hz), 1.06 (6H, d, J=6.83 Hz);LRMS (ESI) m/z 563 [M+H]⁺.

Example 804-{3-Isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-methylbenzamide(80)

4-Fluoro-3-methylbenzonitrile (0.077 g) and cesium carbonate (0.203 g)were added to a solution of compound (6c) (0.150 g) in DMF (1.73 mL),followed by stirring at 80° C. for 18 hr. The reaction solution wasdistributed between ethyl acetate and water. The organic layer waswashed with saturated saline and then dried over anhydrous sodiumsulfate. The solvent was distilled away, and the residue was purified byneutral silica gel column chromatography (hexane/ethyl acetate) toobtain4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-methylbenzonitrile(0.154 g, 73%). This4-{3-isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-methylbenzonitrilewas dissolved in DMSO (5.0 mL) and ethanol (5.0 mL). A 4 N aqueoussodium hydroxide solution (0.195 mL) and a 30% hydrogen peroxidesolution (0.088 mL) were added to the resulting solution, followed bystirring at room temperature for 30 min. Water was added to the reactionsolution, and the precipitate was collected by filtration, washed withdiethyl ether, and dried under reduced pressure to obtain compound (80)(0.135 g, 83%) as a white solid.

¹H-NMR (DMSO-d₆) δ: 9.88 (1H, d, J=2.20 Hz), 9.43 (1H, d, J=2.20 Hz),9.35 (1H, d, J=4.63 Hz), 8.87 (2H, t, J=9.03 Hz), 8.81 (1H, brs), 8.70(1H, d, J=1.46 Hz), 8.63-8.59 (2H, m), 8.46 (1H, td, J=7.56, 0.73 Hz),8.30 (1H, d, J=8.05 Hz), 8.20 (1H, brs), 8.09 (1H, d, J=4.63 Hz), 3.72(1H, tt, J=6.83, 6.83 Hz), 2.94 (3H, s), 1.76 (6H, d, J=6.83 Hz); LRMS(ESI) m/z 422 [M+H]⁺.

Example 814-{3-Isopropyl-4-(quinolin-3-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-methylbenzamide(81)

According to Example 80, compound (81) (the second stage yield: 59%) wasprepared as a white solid using 4-fluoro-2-methylbenzonitrile instead of4-fluoro-3-methylbenzonitrile.

1H-NMR (DMSO-d₆) δ: 9.15 (1H, d, J=2.20 Hz), 8.78 (1H, d, J=4.63 Hz),8.70 (1H, d, J=2.20 Hz), 8.21 (1H, dd, J=7.56, 1.22 Hz), 8.20 (1H, s),8.17 (1H, d, J=8.54 Hz), 8.14 (1H, d, J=7.56 Hz), 7.90 (1H, dt, J=1.22,7.56 Hz), 7.80 (1H, brs), 7.75 (1H, t, J=7.56 Hz), 7.61 (1H, d, J=8.54Hz), 7.43 (1H, d, J=4.63 Hz), 7.42 (1H, brs), 2.97 (1H, tt, J=6.83, 6.83Hz), 2.53 (3H, s), 1.07 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 422 [M+H]⁺.

Example 823-Methyl-4-{4-(quinolin-3-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(82)

4-Fluoro-3-methylbenzonitrile (0.052 g) and cesium carbonate (0.150 g)were added to a solution of compound (1d) (0.092 g) in1-methyl-2-pyrrolidone (hereinafter referred to as NMP) (1.0 mL),followed by stirring at 120° C. for 60 hr. Water was added to thereaction solution, and the precipitate was collected by filtration andwas washed by sprinkling water to obtain3-methyl-4-{4-(quinolin-3-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(11%). According to Example 1(7), compound (82) (64%) was prepared as awhite solid using3-methyl-4-{4-(quinolin-3-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ: 9.06 (1H, d, J=1.95 Hz), 8.84 (1H, d, J=4.63 Hz),8.62 (1H, d, J=1.95 Hz), 8.16 (1H, d, J=8.54 Hz), 8.14 (1H, brs), 8.10(1H, d, J=7.56 Hz), 8.03 (1H, d, J=1.46 Hz), 7.94-7.87 (2H, m), 7.73(1H, t, J=7.56 Hz), 7.66 (1H, d, J=8.29 Hz), 7.64 (1H, d, J=4.63 Hz),7.55 (1H, brs), 2.17 (3H, s); LRMS (ESI) m/z 448 [M+H]⁺.

Example 832-(Hydroxycyclohexylamino)-4-{3-isopropyl-4-(4-(4-methoxyphenyl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(83)

According to Example 36(2),2-bromo-4-{3-isopropyl-4-(4-(4-methoxyphenyl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrilewas prepared using 4-(4-methoxyphenyl)-1H-imidazole instead ofimidazole; and according to Example 36(3), (83) (the third stage yield:19%) was prepared as a white solid using2-bromo-4-{3-isopropyl-4-(4-(4-methoxyphenyl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrileinstead of compound (36b).

¹H-NMR (DMSO-d₆) δ: 8.77 (1H, d, J=4.88 Hz), 8.42 (1H, d, J=7.32 Hz),8.23 (1H, d, J=1.22 Hz), 8.14 (1H, s), 7.82-7.77 (5H, m), 7.47 (1H, d,J=4.88 Hz), 7.43 (1H, dd, J=8.54, 1.95 Hz), 7.17 (1H, brs), 6.99 (2H, d,J=8.54 Hz), 4.59 (1H, d, J=4.15 Hz), 3.78 (3H, s), 3.54-3.47 (1H, m),3.22 (1H, tt, J=6.59, 6.59 Hz), 2.10 (2H, d, J=11.22 Hz), 1.88 (2H, d,J=11.22 Hz), 1.36-1.23 (5H, m), 1.14 (6H, d, J=6.59 Hz); LRMS (ESI) m/z566 [M+H]⁺.

Example 842-(Hydroxycyclohexylamino)-4-{3-isopropyl-4-(4-(pyridin-3-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(84)

According to Example 83, compound (84) (the third stage yield: 37%) wasprepared as a white solid using 4-(pyridin-3-yl)-1H-imidazoledihydrochloride instead of 4-(4-methoxyphenyl)-1H-imidazole.

¹H-NMR (DMSO-d₆) δ: 9.11 (1H, d, J=1.71 Hz), 8.80 (1H, d, J=4.88 Hz),8.48 (1H, dd, J=4.76, 1.34 Hz), 8.42 (1H, s), 8.41 (1H, s), 8.36 (1H,s), 8.22 (1H, d, J=7.81 Hz), 7.85 (1H, s), 7.79 (1H, d, J=1.95 Hz), 7.77(1H, s), 7.51 (1H, d, J=4.88 Hz), 7.45 (1H, dd, J=7.81, 4.88 Hz), 7.44(1H, dd, J=8.29, 1.71 Hz), 7.16 (1H, brs), 4.58 (1H, d, J=3.90 Hz),3.55-3.46 (1H, m), 3.19 (1H, tt, J=6.59, 6.59 Hz), 2.10 (2H, d, J=10.25Hz), 1.88 (2H, d, J=10.25 Hz), 1.38-1.23 (5H, m), 1.14 (6H, d, J=6.59Hz); LRMS (ESI) m/z 537 [M+H]⁺.

Example 852-(Hydroxycyclohexylamino)-4-{3-isopropyl-4-(4-(pyridin-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(85)

According to Example 83, compound (85) (the third stage yield: 37%) wasprepared as a white solid using 4-(pyridin-4-yl)-1H-imidazoledihydrochloride instead of 4-(4-methoxyphenyl)-1H-imidazole.

¹H-NMR (DMSO-d₆) δ: 8.82 (1H, d, J=4.88 Hz), 8.61 (2H, d, J=5.12 Hz),8.57 (1H, s), 8.44 (1H, d, J=7.07 Hz), 8.40 (1H, s), 7.85 (2H, d, J=5.12Hz), 7.80 (1H, d, J=8.66 Hz), 7.80 (1H, d, J=1.83 Hz), 7.80 (1H, brs),7.53 (1H, d, J=4.88 Hz), 7.44 (1H, dd, J=8.66, 1.83 Hz), 7.18 (1H, brs),4.61 (1H, d, J=4.15 Hz), 3.56-3.49 (1H, m), 3.16 (1H, tt, J=6.83, 6.83Hz), 2.12 (2H, d, J=11.22 Hz), 1.89 (2H, d, J=11.22 Hz), 1.40-1.24 (4H,m), 1.14 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 537 [M+H]⁺.

Example 862-(Hydroxycyclohexylamino)-4-{3-isopropyl-4-(4-(pyrimidin-5-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(86)

According to Example 83, compound (86) (the third stage yield: 17%) wasprepared as a yellowish-white solid using (pyrimidin-5-yl)-1H-imidazoleinstead of 4-(4-methoxyphenyl)-1H-imidazole.

¹H-NMR (DMSO-d₆) δ: 9.27 (2H, s), 9.11 (1H, s), 8.81 (1H, d, J=4.88 Hz),8.54 (1H, s), 8.43 (1H, s), 8.41 (1H, s), 7.87 (1H, s), 7.79 (1H, s),7.52 (1H, d, J=4.88 Hz), 7.52 (1H, brs), 7.43 (1H, d, J=8.05 Hz), 7.17(1H, s), 4.59 (1H, d, J=4.39 Hz), 3.54-3.46 (1H, m), 3.17 (1H, tt,J=7.07, 7.07 Hz), 2.10 (2H, d, J=9.27 Hz), 1.87 (2H, d, J=9.27 Hz),1.33-1.25 (5H, m), 1.13 (6H, d, J=7.07 Hz); LRMS (ESI) m/z 538 [M+H]⁺.

Example 872-(Hydroxycyclohexylamino)-4-{3-isopropyl-4-(5-methyl-4-(pyridin-3-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(87)

According to Example 83, compound (87) (the third stage yield: 10%) wasprepared using 5-methyl-4-(pyridin-3-yl)-1H-imidazole instead of4-(4-methoxyphenyl)-1H-imidazole.

¹H-NMR (DMSO-d₆) δ: 8.97 (1H, s), 8.84 (1H, d, J=4.88 Hz), 8.51 (1H, d,J=4.15 Hz), 8.42 (1H, d, J=7.07 Hz), 8.19 (1H, s), 8.12 (1H, d, J=7.81Hz), 7.86 (1H, brs), 7.80 (1H, s), 7.78 (1H, d, J=7.81 Hz), 7.56-7.41(3H, m), 7.17 (1H, brs), 4.59 (1H, d, J=4.15 Hz), 3.54-3.47 (1H, m),2.81 (1H, tt, J=6.59, 6.34 Hz), 2.31 (3H, s), 2.10 (2H, d, J=10.98 Hz),1.88 (2H, d, J=10.98 Hz), 1.38-1.23 (8H, m), 1.03 (3H, d, J=6.34 Hz);LRMS (ESI) m/z 551 [M+H]⁺.

Example 884-{4-(4-(Furan-2-yl)-1H-imidazol-1-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(4-hydroxycyclohexylamino)benzamide(88)

According to Example 83, compound (88) (the third stage yield: 3%) wasprepared as a white solid using 4-(furan-2-yl)-1H-imidazole instead of4-(4-methoxyphenyl)-1H-imidazole.

¹H-NMR (DMSO-d₆) δ: 8.77 (1H, d, J=4.95 Hz), 8.41 (1H, d, J=8.52 Hz),8.27 (1H, d, J=1.32 Hz), 8.02 (1H, d, J=1.32 Hz), 7.79 (1H, d, J=3.30Hz), 7.77 (1H, d, J=3.30 Hz), 7.69 (1H, d, J=1.81 Hz), 7.47 (1H, d,J=4.95 Hz), 7.42 (1H, dd, J=8.57, 1.81 Hz), 6.69 (1H, d, J=3.30 Hz),6.57 (1H, dd, J=3.30, 1.81 Hz), 4.57 (1H, d, J=4.29 Hz), 3.55-3.46 (1H,m), 3.15 (1H, tt, J=6.92, 6.92 Hz), 2.09 (2H, d, J=10.55 Hz), 1.87 (2H,d, J=10.55 Hz), 1.40-1.19 (5H, m), 1.13 (6H, d, J=6.92 Hz); LRMS (ESI)m/z 526 [M+H]⁺.

Example 892-(Hydroxycyclohexylamino)-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(89)

According to Example 83, compound (89) (the third stage yield: 29%) wasprepared as a white solid using4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazole hydrochloride instead of4-(4-methoxyphenyl)-1H-imidazole.

¹H-NMR (DMSO-d₆) δ: 8.75 (1H, d, J=4.95 Hz), 8.41 (1H, d, J=7.25 Hz),8.18 (1H, d, J=1.15 Hz), 7.97 (1H, s), 7.86 (1H, d, J=1.15 Hz), 7.83(1H, brs), 7.79 (1H, d, J=1.81 Hz), 7.77 (1H, d, J=8.74 Hz), 7.73 (1H,s), 7.44 (1H, d, J=4.95 Hz), 7.42 (1H, dd, J=8.74, 1.81 Hz), 7.15 (1H,brs), 4.57 (1H, d, J=4.45 Hz), 3.87 (3H, s), 3.54-3.47 (1H, m),3.34-3.30 (1H, m), 3.19 (1H, tt, J=6.76, 6.76 Hz), 2.09 (2H, d, J=10.72Hz), 1.88 (2H, d, J=10.72 Hz), 1.36-1.23 (4H, m), 1.13 (6H, d, J=6.76Hz).

Example 904-{4-(4-(Furan-3-yl)-1H-imidazol-1-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(4-hydroxycyclohexylamino)benzamide(90)

According to Example 83, compound (90) (the third stage yield: 23%) wasprepared as a white solid using 4-(furan-3-yl)-1H-imidazole instead of4-(4-methoxyphenyl)-1H-imidazole.

¹H-NMR (DMSO-d₆) δ: 8.77 (1H, d, J=5.11 Hz), 8.41 (1H, d, J=7.09 Hz),8.23 (1H, s), 8.01 (1H, s), 7.98 (1H, s), 7.79 (1H, s), 7.77 (1H, d,J=6.76 Hz), 7.71 (1H, s), 7.45 (1H, d, J=5.11 Hz), 7.42 (1H, dd, J=8.41,1.65 Hz), 6.84 (1H, s), 4.57 (1H, d, J=4.29 Hz), 3.57-3.45 (1H, m), 3.18(1H, tt, J=6.76, 6.76 Hz), 2.10 (2H, d, J=10.39 Hz), 1.88 (2H, d,J=10.39 Hz), 1.40-1.22 (4H, m), 1.13 (6H, d, J=6.76 Hz); LRMS (ESI) m/z526 [M+H]⁺.

Example 912-(4-Hydroxycyclohexylamino)-4-{3-isopropyl-(4-(4-(thiophen-3-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(91)

According to Example 83, compound (91) (the third stage yield: 17%) wasprepared as a white solid using 4-(thiophen-3-yl)-1H-imidazole insteadof 4-(4-methoxyphenyl)-1H-imidazole.

¹H-NMR (DMSO-d₆) δ: 8.77 (1H, d, J=4.78 Hz), 8.42 (1H, d, J=7.25 Hz),8.24 (1H, s), 8.10 (1H, s), 7.79-7.76 (3H, m), 7.60 (1H, dd, J=4.95,2.80 Hz), 7.52 (1H, d, J=4.95 Hz), 7.46 (1H, d, J=5.11 Hz), 7.43 (1H,dd, J=8.90, 1.65 Hz), 4.58 (1H, d, J=4.29 Hz), 3.55-3.48 (1H, m), 3.20(1H, tt, J=6.59, 6.59 Hz), 2.10 (2H, d, J=9.73 Hz), 1.88 (2H, d, J=9.73Hz), 1.40-1.24 (4H, m), 1.14 (6H, d, J=6.59 Hz); LRMS (ESI) m/z 542[M+H]⁺.

Example 924-{4-(1′H-1,4′-Biimidazol-1′-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(4-hydroxycyclohexylamino)benzamide(92)

According to Example 83, compound (92) (the third stage yield: 11%) wasprepared as a white solid using 1′H-1,4′-biimidazole instead of4-(4-methoxyphenyl)-1H-imidazole.

¹H-NMR (DMSO-d₆) δ: 8.75 (1H, d, J=4.95 Hz), 8.41 (1H, d, J=7.25 Hz),8.18 (1H, d, J=1.15 Hz), 7.97 (1H, s), 7.86 (1H, d, J=1.15 Hz), 7.80(1H, s), 7.78 (1H, d, J=7.25 Hz), 7.73 (1H, s), 7.44 (1H, d, J=4.95 Hz),7.42 (1H, dd, J=8.74, 1.98 Hz), 4.57 (1H, d, J=4.45 Hz), 3.87 (3H, s),3.57-3.53 (1H, m), 3.35-3.25 (1H, m), 3.19 (1H, tt, J=6.76, 6.76 Hz),2.09 (2H, d, J=10.72 Hz), 1.88 (2H, d, J=10.72 Hz), 1.36-1.23 (4H, m),1.13 (6H, d, J=6.76 Hz).

Example 932-(Hydroxycyclohexylamino)-4-{3-isopropyl-4-(4-(1-benzyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(93)

According to Example 83, compound (93) (the third stage yield: 49%) wasprepared as a white solid using4-(1-benzyl-1H-pyrazol-4-yl)-1H-imidazole hydrochloride instead of4-(4-methoxyphenyl)-1H-imidazole.

¹H-NMR (DMSO-d₆) δ: 8.75 (1H, d, J=4.88 Hz), 8.40 (1H, d, J=7.32 z),8.19 (1H, s), 8.11 (1H, s), 7.88 (1H, s), 7.79 (2H, d, J=5.61 Hz), 7.78(1H, d, J=10.98 Hz), 7.42 (1H, d, J=4.88 Hz), 7.41 (1H, dd, J=8.54, 1.95Hz), 7.38-7.33 (2H, m), 7.32-7.27 (3H, m), 5.36 (2H, s), 4.60 (1H, d,J=4.15 Hz), 3.53-3.48 (1H, m), 3.19 (1H, tt, J=6.83, 6.83 Hz), 2.09 (2H,d, J=11.71 Hz), 1.87 (2H, d, J=11.71 Hz), 1.38-1.22 (4H, m), 1.12 (6H,d, J=6.83 Hz); LRMS (ESI) m/z 616 [M+H]⁺.

Example 944-{4-(4-(1-(Benzyloxyethyl)-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(4-hydroxycyclohexylamino)benzamide(94)

According to Example 83, compound (94) (the third stage yield: 53%) wasprepared as a white solid using4-{1-(benzyloxyethyl)-1H-pyrazol-4-yl}-1H-imidazole hydrochlorideinstead of 4-(4-methoxyphenyl)-1H-imidazole.

¹H-NMR (DMSO-d₆) δ: 8.76 (1H, d, J=4.88 Hz), 8.40 (1H, d, J=7.07 Hz),8.19 (1H, d, J=0.98 Hz), 8.03 (1H, s), 7.88 (1H, d, J=0.98 Hz), 7.79(1H, s), 7.78 (1H, s), 7.78 (1H, d, J=11.22 Hz), 7.56 (1H, s), 7.54 (1H,d, J=10.73 Hz), 7.49 (1H, dd, J=6.83, 3.42 Hz), 7.44-7.41 (2H, m),7.32-7.24 (2H, m), 4.60 (1H, d, J=4.15 Hz), 4.48 (2H, s), 4.34 (2H, t,J=5.24 Hz), 3.81 (2H, t, J=5.24 Hz), 3.54-3.47 (1H, m), 3.20 (1H, tt,J=6.83, 6.83 Hz), 2.10 (2H, d, J=11.22 Hz), 1.87 (2H, d, J=11.22 Hz),1.38-1.22 (4H, m), 1.13 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 660 [M+H]⁺.

Example 954-{4-(4-(1H-Pyrazol-4-yl)-1H-imidazol-1-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(4-hydroxycyclohexylamino)benzamide(95)

Compound (93) (0.010 g) was dissolved in ethanol (1.0 mL). Palladiumhydroxide (0.020 g) and cyclohexene (0.5 mL) were added to the resultingsolution, followed by stirring under a nitrogen atmosphere at 80° C. for24 hr. The reaction solution was filtered through celite, and thesolvent was distilled away. The residue was purified by neutral silicagel column chromatography (chloroform/methanol) to obtain compound (95)(0.005 g, 56%) as a white solid.

¹H-NMR (DMSO-d₆) δ: 12.87 (1H, s), 8.76 (1H, d, J=4.88 Hz), 8.40 (1H, d,J=7.07 Hz), 8.19 (1H, d, J=1.22 Hz), 8.02 (1H, s), 7.88 (1H, d, J=1.22Hz), 7.82 (1H, s), 7.79 (1H, d, J=2.20 Hz), 7.77 (1H, d, J=8.78 Hz),7.44 (1H, d, J=4.88 Hz), 7.42 (1H, dd, J=8.78, 2.20 Hz), 4.61 (1H, d,J=4.39 Hz), 3.54-3.48 (1H, m), 3.20 (1H, tt, J=6.83, 6.83 Hz), 2.10 (2H,d, J=11.71 Hz), 1.88 (2H, d, J=11.71 Hz), 1.38-1.22 (4H, m), 1.13 (6H,d, J=6.83 Hz); LRMS (ESI) m/z 526 [M+H]⁺.

Example 962-(4-Hydroxycyclohexylamino)-4-{4-(4-(1-hydroxymethyl)-(1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(96)

According to Example 95, compound (96) (16%) was prepared as a whitesolid using compound (94) instead of compound (93).

¹H-NMR (DMSO-d₆) δ: 8.76 (1H, d, J=4.88 Hz), 8.41 (1H, d, J=7.07 Hz),8.19 (1H, s), 8.00 (1H, s), 7.88 (1H, s), 7.84 (1H, brs), 7.80 (1H, s),7.78 (1H, d, J=9.03 Hz), 7.76 (1H, s), 7.43 (1H, d, J=4.88 Hz), 7.42(1H, dd, J=7.07, 1.71 Hz), 7.15 (1H, brs), 4.93 (1H, t, J=5.45 Hz), 4.59(1H, d, J=4.39 Hz), 4.17 (2H, t, J=5.45 Hz), 3.76 (2H, q, J=5.45 Hz),3.54-3.46 (1H, m), 3.20 (1H, tt, J=6.83, 6.83 Hz), 2.10 (2H, d, J=10.98Hz), 1.88 (2H, d, J=10.98 Hz), 1.38-1.22 (5H, m), 1.13 (6H, d, J=6.83Hz); LRMS (ESI) m/z 556 [M+H]⁺.

Example 972-(4-Hydroxycyclohexylamino)-4-{3-methyl-4-(4-phenyl-1H-imidazol-1-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(97) Example 97(1)4-Chloro-3-methyl-1-{(2-(trimethylsilyl)ethoxy)methyl}-1H-pyrrolo[2,3-b]pyridine(97a)

Compound (40d) (1.0 g) was dissolved in DMF (20 mL), and sodium hydride(0.288 g, a 55% dispersion in paraffin liquid) was added to theresulting solution at 0° C., followed by stirring for 10 min. Then,{2-(chloromethoxy)ethyl}silane (1.16 mL) was added to the reactionsolution, followed by stirring at room temperature for 1 hr. Ice waterwas added to the reaction solution, followed by extraction with ethylacetate. The organic layer was washed with saturated saline and was thendried over anhydrous sodium sulfate. The solvent was distilled away, andthe residue was purified by neutral silica gel column chromatography(hexane/ethyl acetate) to obtain compound (97a) (4.50 g, 84%) as acolorless oily substance.

¹H-NMR (CDCl₃) δ: 8.21 (1H, d, J=5.12 Hz), 7.19 (1H, s), 7.10 (1H, d,J=5.12 Hz), 5.68 (2H, s), 3.58 (2H, t, J=8.17 Hz), 2.43 (3H, s), 0.97(2H, t, J=8.17 Hz), 0.00 (9H, s); LRMS (ESI) m/z 297 [M+H]⁺.

Example 97(2)3-Methyl-4-(4-phenyl-1H-imidazol-1-yl)-1-{(2-(trimethylsilyl)ethoxy)methyl}-1H-pyrrolo[2,3-b]pyridine(97b)

Compound (97a) (2.00 g), copper(I) oxide (0.048 g),4,7-dimethoxy-1,10-phenanthroline (0.243 g), cesium carbonate (3.07 g),polyethylene glycol (Mn=3400) (1.35 g), and 4-phenyl-1H-imidazole (1.17g) were suspended in NMP, followed by stirring at 150° C. for 48 hr. Thereaction solution was suspended in ethyl acetate, and insoluble matterswere filtered through celite. The filtrate was washed with saturatedsaline and was then dried over anhydrous sodium sulfate. The solvent wasdistilled away, and the residue was purified by neutral silica gelcolumn chromatography (hexane/ethyl acetate) to obtain compound (97b)(0.272 g, 10%) as a colorless oily substance.

Example 97(3)3-Methyl-4-(4-phenyl-1H-imidazol-1-yl)-1H-pyrrolo[2,3-b]pyridine (97c)

Compound (97b) (0.272 g) was dissolved in THF (2.3 mL), andtetrabutylammonium floride (2.0 mL, a 1.0 M solution in THF) was addedto the resulting solution, followed by reflux for 24 hr. The reactionsolution was concentrated and was then purified by basic silica gelcolumn chromatography (hexane/ethyl acetate) to obtain compound (97c)(0.140 g, 76%) as a white solid.

¹H-NMR (DMSO-d₆) δ: 11.78 (1H, s), 8.29 (1H, d, J=5.12 Hz), 8.08 (2H,dd, J=8.54, 1.22 Hz), 7.88 (2H, dd, J=8.54, 1.22 Hz), 7.40-7.38 (3H, m),7.24 (1H, t, J=7.44 Hz), 7.13 (1H, d, J=5.12 Hz), 1.99 (3H, s); LRMS(ESI) m/z 275 [M+H]⁺.

Example 97(4)2-Bromo-4-{3-methyl-4-(4-phenyl-1H-imidazol-1-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrile(97d)

Compound (97c) (0.140 g) was dissolved in DMF (1.7 mL), and sodiumhydride (0.024 g, a 55% dispersion in paraffin liquid) was added to theresulting solution at 0° C., followed by stirring for 10 min. Then,2-bromo-4-fluorobenzonitrile (0.112 g) was added to the reactionsolution, followed by stirring at 50° C. for 30 min. Ice water was addedto the reaction solution, and the precipitate was collected byfiltration and was dried under reduced pressure to obtain compound (97d)(0.160 g, 69%) as a white solid.

¹H-NMR (DMSO-d₆) δ: 8.76 (1H, d, J=2.20 Hz), 8.58 (1H, d, J=5.12 Hz),8.41 (1H, dd, J=8.66, 2.20 Hz), 8.21-8.19 (4H, m), 7.95 (2H, d, J=8.29Hz), 7.49 (1H, d, J=5.12 Hz), 7.46 (2H, t, J=7.81 Hz), 7.32 (1H, t,J=7.81 Hz), 2.10 (3H, s); LRMS (ESI) m/z 454 [M+H]⁺.

Example 97(5)2-(4-Hydroxycyclohexylamino)-4-{3-methyl-4-(4-phenyl-1H-imidazol-1-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzamide(97)

According to Example 1(6),2-(4-hydroxycyclohexylamino)-4-{3-methyl-4-(4-phenyl-1H-imidazol-1-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrile(58%) was prepared using compound (97d) instead of (1e); and accordingto Example 1(7), compound (97) (22%) was prepared as a white solid using2-(4-hydroxycyclohexylamino)-4-{3-methyl-4-(4-phenyl-1H-imidazol-1-yl)-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ: 8.43-8.39 (2H, m), 8.13 (2H, s), 7.96 (1H, s), 7.89(2H, d, J=8.90 Hz), 7.87 (1H, brs), 7.75 (1H, d, J=8.54 Hz), 7.40 (2H,t, J=7.32 Hz), 7.32 (2H, s), 7.25 (1H, t, J=7.32 Hz), 7.15 (1H, brs),7.01 (1H, d, J=8.54 Hz), 4.55 (1H, s), 3.52-3.48 (1H, m), 3.40-3.37 (1H,m), 2.09-2.05 (5H, m), 1.84 (2H, d, J=8.54 Hz), 1.36-1.21 (4H, m); LRMS(ESI) m/z 507 [M+H]⁺.

Example 982-(4-Hydroxycyclohexylamino)-4-{3-methyl-4-(4-(pyridin-3-yl)-1H-imidazol-1-yl)-1H-pyrazolo[2,3-b]pyridin-1-yl}benzamide(98) Example 98(1)3-Methyl-4-{4-(pyridin-3-yl)-1H-imidazol-1-yl}-1-{(2-(trimethylsilyl)ethoxy)methyl}-1H-pyrrolo[2,3-b]pyridine(98a)

According to Example 97(2), compound (98a) (11%) was prepared as acolorless oily substance using 4-{pyridin-3-yl}-1H-imidazolehydrochloride instead of 4-phenyl-1H-imidazole.

¹H-NMR (CDCl₃) δ: 9.10 (1H, d, J=1.71 Hz), 8.57 (1H, dd, J=4.88, 1.71Hz), 8.43 (1H, d, J=5.12 Hz), 8.23 (1H, dt, J=7.97, 1.71 Hz), 7.88 (1H,d, J=1.22 Hz), 7.64 (1H, d, J=1.22 Hz), 7.40 (1H, dd, J=7.97, 4.88 Hz),7.26 (1H, d, J=1.22 Hz), 7.10 (1H, d, J=5.12 Hz), 5.72 (2H, s),3.63-3.59 (2H, m), 2.10 (3H, d, J=1.22 Hz), 1.00-0.96 (2H, m), 0.00 (9H,s); LRMS (ESI) m/z 406 [M+H]⁺.

Example 98(2)3-Methyl-4-{4-(pyridin-3-yl)-1H-imidazol-1-yl}-1H-pyrrolo[2,3-b]pyridine(98b)

According to Example 97(3), compound (98b) (62%) was prepared as a whitesolid using compound (98a) instead of compound (97b).

¹H-NMR (DMSO-d₆) δ: 11.89 (1H, s), 8.41 (1H, d, J=5.12 Hz), 8.19 (2H, d,J=8.29 Hz), 7.99 (2H, d, J=7.56 Hz), 7.51-7.49 (2H, m), 7.35 (1H, t,J=6.83 Hz), 7.24 (1H, d, J=5.12 Hz), 2.10 (3H, s); LRMS (ESI) m/z 276[M+H]⁺.

Example 98(3)2-Bromo-4-{3-methyl-4-{4-(pyridin-3-yl)-1H-imidazol-1-yl}-1H-pyrrolo[2,3-b]pyridin-1-yl}benzonitrile(98c)

According to Example 97(4), compound (98c) (61%) was prepared as a whitesolid using compound (98b) instead of compound (97c).

¹H-NMR (DMSO-d₆) δ: 9.21 (1H, d, J=1.95 Hz), 8.81 (1H, d, J=1.95 Hz),8.64 (1H, d, J=5.12 Hz), 8.58 (1H, dd, J=4.63, 1.71 Hz), 8.46 (1H, dd,J=8.78, 2.20 Hz), 8.42 (1H, d, J=0.98 Hz), 8.34 (1H, d, J=0.98 Hz), 8.33(1H, dt, J=8.05, 1.95 Hz), 8.27 (1H, s), 8.24 (1H, d, J=8.78 Hz), 7.55(1H, d, J=5.12 Hz), 7.54 (1H, dd, J=8.05, 4.63 Hz), 2.15 (3H, s); LRMS(ESI) m/z 455 [M+H]⁺.

Example 98(4)2-(4-Hydroxycyclohexylamino)-4-{3-methyl-4-(4-(pyridin-3-yl)-1H-imidazol-1-yl)-1H-pyrazolo[2,3-b]pyridin-1-yl}benzamide(98)

According to Example 1(6), compound (98) (21%) was prepared as a whitesolid using compound (98c) instead of compound (1e).

¹H-NMR (DMSO-d₆) δ: 9.11 (1H, s), 8.46-8.42 (3H, m), 8.30 (1H, s), 8.21(2H, s), 7.97 (1H, s), 7.85 (1H, brs), 7.75 (1H, d, J=7.32 Hz), 7.55(1H, s), 7.45 (1H, s), 7.32 (2H, s), 7.15 (1H, brs), 7.01 (1H, d, J=7.32Hz), 4.56 (1H, s), 3.50-3.47 (1H, m), 3.41-3.37 (1H, m), 2.09 (2H, d,J=8.54 Hz), 2.04 (2H, s), 1.83 (2H, d, J=8.54 Hz), 1.35-1.22 (4H, m);LRMS (ESI) m/z 508 [M+H]⁺.

Example 993-Chloro-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(99) Example 99(1)3-Chloro-4-{4-chloro-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(99a)

Compound (6b) (0.5 g) was dissolved in DMF (13 mL), and sodium hydride(0.145 g, a 55% dispersion in paraffin liquid) was added to theresulting solution at 0° C., followed by stirring for 30 min. Then,3-chloro-4-fluorobenzonitrile was added to the reaction solution,followed by stirring at 60° C. for 1 hr. Water was added to the reactionsolution. The precipitate was collected by filtration and washed bysprinkling water to obtain compound (99a) (0.72 g, 85%) as a brownsolid.

¹H-NMR (CDCl₃) δ: 8.39 (1H, d, J=4.88 Hz), 7.90 (1H, s), 7.73 (2H, s),7.21 (1H, d, J=4.88 Hz), 3.80 (1H, tt, J=6.83, 6.83 Hz), 1.49 (6H, d,J=6.83 Hz); LRMS (ESI) m/z 331 [M+H]⁺.

Example 99(2)3-Chloro-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(99)

Compound (99a) (0.18 g) was dissolved in DMSO (2.1 mL), and potassiumcarbonate (0.3 g), copper(II) oxide (nanopowder) (0.086 g), and4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazole hydrochloride (0.13 g) wereadded to the resulting solution, followed by stirring at 120° C. for 48hr. The reaction solution was diluted with chloroform, and insolublematters were filtered by celite. The solvent was distilled away, and theresidue was purified by neutral silica gel column chromatography(chloroform/methanol) to obtain compound (99) (0.045 g, 18%) as a whitesolid.

¹H-NMR (DMSO-d₆) δ: 8.65 (1H, dd, J=4.88, 0.98 Hz), 8.25 (1H, brs), 8.22(1H, s), 8.20 (1H, d, J=0.98 Hz), 8.03 (1H, dd, J=8.29, 0.98 Hz), 7.97(1H, s), 7.91 (1H, s), 7.75 (1H, d, J=8.29 Hz), 7.74 (1H, s), 7.69 (1H,brs), 7.42 (1H, dd, J=4.88, 0.98 Hz), 3.87 (3H, s), 3.24 (1H, tt,J=6.83, 6.83 Hz), 1.10 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 461 [M+H]⁺.

Example 1004-{3-Isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-methylbenzamide(100) Example 100(1) 4-Iodo-3-isopropyl-1H-pyrazolo[3,4-b]pyridine(100a)

Normal-butyllithium (a 2.6 M solution in hexane, 41.0 mL) was dropwiseadded to a solution of N,N-diisopropylamine (16.5 mL) in tetrahydrofuran(hereinafter referred to as THF, 300 mL) under a nitrogen atmosphere at−5 to 0° C., and a solution of 2-fluoro-3-iodo-pyridine (24 g) in THF(200 mL) was dropwise added to the resulting mixture at −78° C.,followed by stirring for 15 min. Subsequently, isobutyric anhydride(20.0 mL) was dropwise added to the reaction solution at −78° C.,followed by stirring at the same temperature for 1 hr, and thenhydrazine monohydrate (10.4 mL) was added to the reaction solution,followed by stirring at 60° C. for 1 hr. The reaction solution wasdistributed between ethyl acetate and water, and the organic layer waswashed with saturated saline. The organic layer after the washing wasdried over anhydrous sodium sulfate, and then the solvent was distilledaway. The residue was purified by neutral silica gel columnchromatography (hexane/ethyl acetate) to obtain compound (100a) (12.9 g,42%) as a white solid.

¹H-NMR (CDCl₃) δ: 12.02 (1H, brs), 8.11 (1H, d, J=4.88 Hz), 7.63 (1H, d,J=4.88 Hz), 3.93 (1H, tt, J=6.83, 6.83 Hz), 1.48 (6H, d, J=6.83 Hz);LRMS (ESI) m/z 288 [M+H]⁺.

Example 100(2)3-Isopropyl-4-{4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl}-1H-pyrazolo[3,4-b]pyridine(100b)

According to Example 97(1),4-iodo-3-isopropyl-1-(4-methoxybenzyl)-1H-pyrazolo[3,4-b]pyridine wasprepared using (100a) (15.5 g) instead of compound (40d) and using4-methoxybenzyl chloride instead of {2-(chloromethoxy)ethyl}silane andwas used in the subsequent reaction without being purified. According toExample 97(2),3-isopropyl-1-(4-methoxybenzyl)-4-{4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl}-1H-pyrazolo[3,4-b]pyridinewas prepared using4-iodo-3-isopropyl-1-(4-methoxybenzyl)-1H-pyrazolo[3,4-b]pyridineinstead of compound (97a) and using4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazole hydrochloride instead of4-phenyl-1H-imidazole and was used in the subsequent reaction withoutbeing purified. This3-isopropyl-1-(4-methoxybenzyl)-4-{4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl}-1H-pyrazolo[3,4-b]pyridinewas dissolved in trifluoroacetic acid (60 mL) and anisole (19 mL),followed by reflux for 5 hr. The reaction solution was concentrated andthen diluted with acetonitrile, and saturated sodium bicarbonate waterwas added thereto. The precipitate was collected by filtration and wasdried under reduced pressure to obtain compound (100b) (12.3 g, thethird stage yield: 63%) as a white solid.

¹H-NMR (DMSO-d₆) δ: 13.67 (1H, brs), 8.60 (1H, d, J=4.88 Hz), 8.12 (1H,d, J=1.22 Hz), 7.96 (1H, s), 7.81 (1H, d, J=1.22 Hz), 7.73 (1H, s), 7.23(1H, d, J=4.88 Hz), 3.87 (3H, s), 3.11 (1H, tt, J=6.83, 6.83 Hz), 1.07(6H, d, J=6.83 Hz); LRMS (ESI) m/z 308 [M+H]⁺.

Example 100(3)4-{3-Isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-methylbenzamide(100)

According to Example 80, compound (100) (the second stage yield: 65%)was prepared as a white solid using compound (100b) instead of compound(6c).

¹H-NMR (DMSO-d₆) δ: 9.37 (1H, d, J=4.88 Hz), 8.93 (1H, d, J=1.22 Hz),8.81 (1H, brs), 8.70 (2H, s), 8.62 (1H, d, J=1.22 Hz), 8.60 (1H, dd,J=8.29, 1.71 Hz), 8.46 (1H, s), 8.27 (1H, d, J=8.29 Hz), 8.21 (1H, s),8.12 (1H, d, J=4.88 Hz), 4.59 (3H, s), 3.94 (1H, tt, J=6.83, 6.83 Hz),2.90 (3H, s), 1.84 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 441 [M+H]⁺.

Example 1014-{3-Isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-vinylbenzamide(101)

According to Example 80, compound (101) (the second stage yield: 38%)was prepared as a white solid using compound (100b) instead of compound(6c) and using 4-fluoro-3-vinylbenzonitrile instead of4-fluoro-3-methylbenzonitrile.

¹H-NMR (DMSO-d₆) δ: 8.62 (1H, d, J=4.88 Hz), 8.36 (1H, d, J=1.95 Hz),8.22 (1H, brs), 8.20 (1H, d, J=1.22 Hz), 7.98 (1H, s), 7.96 (1H, dd,J=8.29, 1.95 Hz), 7.89 (1H, d, J=1.22 Hz), 7.74 (1H, s), 7.58 (1H, d,J=8.29 Hz), 7.58 (1H, brs), 7.40 (1H, d, J=4.88 Hz), 6.39 (1H, dd,J=17.56, 11.47 Hz), 5.95 (1H, d, J=17.56 Hz), 5.30 (1H, d, J=11.47 Hz),3.85 (3H, s), 3.23 (1H, tt, J=6.59, 6.59 Hz), 1.11 (6H, d, J=6.59 Hz);LRMS (ESI) m/z 453 [M+H]⁺.

Example 1023-Ethyl-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(102)

According to Example 80, compound (102) (the second stage yield: 15%)was prepared as a white solid using compound (100b) instead of compound(6c) and using 3-ethyl-4-fluorobenzonitrile instead of4-fluoro-3-methylbenzonitrile.

¹H-NMR (DMSO-d₆) δ: 9.35 (1H, d, J=4.88 Hz), 8.93 (1H, d, J=1.22 Hz),8.84 (1H, brs), 8.72 (1H, d, J=1.95 Hz), 8.70 (1H, s), 8.63 (1H, d,J=1.22 Hz), 8.60 (1H, dd, J=8.29, 1.95 Hz), 8.46 (1H, s), 8.25 (1H, d,J=8.29 Hz), 8.22 (1H, brs), 8.12 (1H, d, J=4.88 Hz), 4.59 (3H, s), 3.95(1H, tt, J=6.83, 6.83 Hz), 3.21 (2H, q, J=7.56 Hz), 1.83 (6H, d, J=6.83Hz), 1.75 (3H, t, J=7.56 Hz); LRMS (ESI) m/z 455 [M+H]⁺.

Example 1034-{3-Isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-propylbenzamide(103)

According to Example 80, compound (103) (the second stage yield: 32%)was prepared as a white solid using compound (100b) instead of compound(6c) and using 4-fluoro-3-propylbenzonitrile instead of4-fluoro-3-methylbenzonitrile.

¹H-NMR (DMSO-d₆) δ: 9.35 (1H, d, J=4.88 Hz), 8.93 (1H, d, J=1.22 Hz),8.83 (2H, brs), 8.70 (2H, s), 8.63 (1H, d, J=1.22 Hz), 8.60 (1H, dd,J=8.05, 1.95 Hz), 8.47 (1H, s), 8.27 (1H, d, J=8.05 Hz), 8.22 (1H, brs),8.12 (1H, d, J=4.88 Hz), 4.59 (3H, s), 3.95 (1H, tt, J=6.83, 6.83 Hz),3.21-3.17 (2H, m), 2.15 (2H, ttd, J=7.32, 8.05, 7.32 Hz), 1.84 (6H, d,J=6.83 Hz), 1.45 (3H, t, J=7.32 Hz); LRMS (ESI) m/z 469 [M+H]⁺.

Example 1043-Isopropyl-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(104)

According to Example 80, compound (104) (the second stage yield: 25%)was prepared as a white solid using compound (100b) instead of compound(6c) and using 3-isopropyl-4-fluorobenzonitrile instead of4-fluoro-3-methylbenzonitrile.

¹H-NMR (DMSO-d₆) δ: 8.63 (1H, d, J=4.88 Hz), 8.22 (1H, s), 8.17 (1H,brs), 8.08 (1H, d, J=1.71 Hz), 7.98 (1H, s), 7.92 (1H, s), 7.88 (1H, dd,J=8.05, 1.71 Hz), 7.75 (1H, s), 7.52 (1H, brs), 7.48 (1H, d, J=8.05 Hz),7.39 (1H, d, J=4.88 Hz), 3.88 (3H, s), 3.24 (1H, tt, J=6.83, 6.83 Hz),2.69 (1H, tt, J=6.59, 6.59 Hz), 1.16 (7H, d, J=6.83 Hz), 1.11 (6H, d,J=6.59 Hz); LRMS (ESI) m/z 469 [M+H]⁺.

Example 1053-Cyclopropyl-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(105)

According to Example 80, compound (105) (the second stage yield: 2%) wasprepared as a white solid using compound (100b) instead of compound (6c)and using 3-cyclopropyl-4-fluorobenzonitrile instead of4-fluoro-3-methylbenzonitrile.

¹H-NMR (DMSO-d₆) δ: 8.62 (1H, d, J=4.88 Hz), 8.20 (1H, d, J=0.98 Hz),8.12 (1H, brs), 7.97 (1H, s), 7.89 (1H, d, J=0.98 Hz), 7.83 (1H, dd,J=8.17, 1.83 Hz), 7.74 (1H, s), 7.60 (1H, d, J=1.83 Hz), 7.50 (1H, d,J=8.17 Hz), 7.48 (1H, brs), 7.38 (1H, d, J=4.88 Hz), 3.87 (3H, s), 3.22(1H, tt, J=6.83, 6.83 Hz), 1.66-1.61 (1H, m), 1.11 (6H, d, J=6.83 Hz),0.73-0.66 (4H, m); LRMS (ESI) m/z 467 [M+H]⁺.

Example 1062-Amino-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(106) Example 106(1)2-Amino-4-{4-chloro-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(106a)

Compound (6b) (0.335 g) was dissolved in DMF (8.6 mL), and sodiumhydride (0.097 g, a 55% dispersion in paraffin liquid) was added to theresulting solution at 0° C., followed by stirring for 30 min. Then,4-fluoro-2-nitrobenzonitrile was added to the reaction solution,followed by stirring at 60° C. for 30 min. Water was added to thereaction solution, and the precipitate was collected by filtration andwashed by sprinkling water to obtain4-{4-chloro-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-nitrobenzonitrile(0.5 g, 85%).4-{4-Chloro-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-nitrobenzonitrile(0.35 g) and ammonium chloride (0.35 g) were dissolved in a solventmixture of THF (3 mL), methanol (3 mL), and water (3 mL). Iron (0.57 g)was added to the resulting solution, followed by stirring at 70° C. for1 hr. Insoluble matters were filtered by celite, and the solvent wasdistilled away. The precipitate was washed with water and was collectedby filtration to obtain compound (106a) (0.32 g, 95%) as a white solid.

¹H-NMR (DMSO-d₆) δ: 8.57 (1H, d, J=4.88 Hz), 7.70 (1H, d, J=9.27 Hz),7.60 (1H, d, J=1.95 Hz), 7.47 (1H, d, J=4.88 Hz), 7.45 (1H, dd, J=9.27,1.95 Hz), 6.92 (2H, brs), 3.73 (1H, tt, J=6.83, 6.83 Hz), 1.43 (6H, d,J=6.83 Hz); LRMS (ESI) m/z 330 [M+H]⁺.

Example 106(2)2-Amino-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(106)

According to Example 99(2), compound (106) (12%) was prepared as ayellow solid using compound (106a) instead of compound (99a).

¹H-NMR (DMSO-d₆) δ: 8.76 (1H, d, J=4.88 Hz), 8.18 (1H, s), 7.97 (1H, s),7.86 (1H, s), 7.78 (1H, brs), 7.73 (1H, s), 7.72 (1H, d, J=8.66 Hz),7.65 (1H, d, J=1.95 Hz), 7.50 (1H, dd, J=8.66, 1.95 Hz), 7.44 (1H, d,J=4.88 Hz), 7.11 (1H, brs), 6.94 (2H, s), 3.86 (3H, s), 3.16 (1H, tt,J=6.83, 6.83 Hz), 1.13 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 442 [M+H]⁺.

Example 1073-Amino-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(107) Example 107(1)3-Amino-4-{4-chloro-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(107a)

According to Example 106(1), compound (107a) (50%) was prepared as adark brown solid using 4-chloro-3-nitrobenzonitrile instead of4-fluoro-2-nitrobenzonitrile.

¹H-NMR (DMSO-d₆) δ: 8.47 (1H, d, J=4.88 Hz), 7.50 (1H, d, J=8.05 Hz),7.44 (1H, d, J=4.88 Hz), 7.26 (1H, s), 7.08 (1H, d, J=8.05 Hz), 5.71(2H, s), 3.71 (1H, tt, J=6.83, 6.83 Hz), 1.41 (6H, d, J=6.83 Hz); LRMS(ESI) m/z 311 [M+H]⁺.

Example 107(2)3-Amino-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(107)

According to Example 99(2),3-amino-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrilewas prepared using compound (107a) instead of compound (99a) and wasused in the subsequent reaction without being purified. This3-amino-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrilewas dissolved in DMSO, and a 30% hydrogen peroxide solution and a 4 Maqueous sodium hydroxide solution were added to the resulting solution,followed by stirring at room temperature for 30 min. The reactionsolution was distributed between ethyl acetate and waster, and theorganic layer was washed with saturated saline. The organic layer afterthe washing was dried over anhydrous sodium sulfate, and then thesolvent was distilled away. The residue was purified by neutral silicagel column chromatography (chloroform/methanol) to obtain (107) (thesecond stage yield: 18%) as a white solid.

¹H-NMR (DMSO-d) δ: 8.65 (1H, d, J=4.88 Hz), 8.19 (1H, s), 7.98 (1H, s),7.91 (1H, brs), 7.86 (1H, s), 7.74 (1H, s), 7.43 (1H, d, J=1.46 Hz),7.40 (1H, d, J=3.90 Hz), 7.39 (1H, d, J=4.88 Hz), 7.31 (1H, brs), 7.19(1H, dd, J=8.05, 1.46 Hz), 3.87 (3H, s), 3.18 (1H, tt, J=6.83, 6.83 Hz),1.11 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 442 [M+H]⁺.

Example 1083-(Dimethylamino)-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(108)

Compound (107a) (0.08 g) and iodomethane (0.16 mL) were dissolved inDMF, and sodium hydride (0.028 g, a 55% dispersion in paraffin liquid)was added to the resulting solution at 0° C., followed by stirring atroom temperature for 1 hr. The reaction solution was distributed betweenethyl acetate and water, and the organic layer was washed with saturatedsaline. The organic layer after the washing was dried over anhydroussodium sulfate, and then the solvent was distilled away to obtain3-(dimethylamino)-4-(4-chloro-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl)benzonitrile,which was used in the subsequent reaction without being purified.According to Example 107(2), compound (108) (0.014 g, the third stageyield: 12%) was prepared using3-(dimethylamino)-4-(4-chloro-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl)benzonitrileinstead of compound (107a).

¹H-NMR (DMSO-d₆) δ: 8.60 (1H, d, J=4.88 Hz), 8.19 (1H, d, J=1.22 Hz),8.09 (1H, brs), 7.97 (1H, s), 7.89 (1H, d, J=1.22 Hz), 7.74 (1H, s),7.59 (1H, d, J=1.71 Hz), 7.46 (1H, dd, J=8.05, 1.71 Hz), 7.45 (1H, d,J=1.71 Hz), 7.35 (1H, d, J=4.88 Hz), 7.31 (1H, d, J=8.05 Hz), 3.87 (3H,s), 3.21 (1H, tt, J=6.83, 6.83 Hz), 2.41 (6H, s), 1.10 (6H, d, J=6.83Hz); LRMS (ESI) m/z 470 [M+H]⁺.

Example 1092-(Ethylamino)-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(109)

Compound (100b) (1.00 g), copper iodide (0.248 g), cesium carbonate(2.12 g), and 4-bromo-2-(ethylamino)benzonitrile (0.932 g) weresuspended in 1,4-dioxane (10 mL), and N,N′-dimethylethylenediamine(0.560 mL) was added to the suspension, followed by stirring at 150° C.for 20 hr. The reaction solution was distributed between chloroform andwater. The organic layer was washed with a 2 N aqueous sodium hydroxidesolution and dried over magnesium sulfate, and then the solvent wasdistilled away. The residue was purified by neutral silica gel columnchromatography (chloroform/methanol) to obtain2-(ethylamino)-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(1.13 g, 77%) as a white solid.2-(Ethylamino)-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(0.700 g) was dissolved in DMSO (10 mL), and a 30% hydrogen peroxidesolution (0.310 mL) and a 4 N aqueous sodium hydroxide solution (1.16mL) were added to the resulting solution, followed by stirring at roomtemperature for 10 min. Water was added to the reaction solution, andthe precipitate was collected by filtration and was dried under reducedpressure to obtain compound (109) (0.655 g, 90%) as a white solid.

¹H-NMR (DMSO-d₆) δ: 8.78 (1H, d, J=4.88 Hz), 8.35 (1H, t, J=5.24 Hz),8.19 (1H, d, J=1.46 Hz), 7.98 (1H, s), 7.87 (1H, d, J=1.46 Hz), 7.80(1H, d, J=8.78 Hz), 7.74 (1H, s), 7.70 (1H, d, J=1.95 Hz), 7.48 (1H, dd,J=8.78, 1.95 Hz), 7.45 (1H, d, J=4.88 Hz), 7.19 (1H, brs), 3.88 (3H, s),3.26-3.18 (3H, m), 1.28 (3H, t, J=7.07 Hz), 1.14 (6H, d, J=6.83 Hz);LRMS (ESI) m/z 470 [M+H]⁺.

Example 1104-{3-Isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(methylamino)benzamide(110)

According to Example 109, compound (110) (the second stage yield: 30%)was prepared as a white solid using 4-bromo-2-(methylamino)benzonitrileinstead of 4-bromo-2-(ethylamino)benzonitrile.

¹H-NMR (DMSO-d₆) δ: 8.77 (1H, d, J=4.88 Hz), 8.30 (1H, q, J=4.88 Hz),8.18 (1H, s), 7.97 (1H, s), 7.86 (1H, s), 7.79 (1H, d, J=8.54 Hz), 7.73(1H, s), 7.64 (1H, d, J=1.71 Hz), 7.49 (1H, dd, J=8.54, 1.71 Hz), 7.43(1H, d, J=4.88 Hz), 3.86 (3H, s), 3.17 (1H, tt, J=6.83, 6.83 Hz), 2.87(3H, d, J=4.88 Hz), 1.13 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 456 [M+H]⁺.

Example 1114-{3-Isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(isopropylamino)benzamide(111)

According to Example 109, compound (111) (the second stage yield: 36%)was prepared as a white solid using4-bromo-2-(isopropylamino)benzonitrile instead of4-bromo-2-(ethylamino)benzonitrile.

¹H-NMR (DMSO-d₆) δ: 8.78 (1H, d, J=4.88 Hz), 8.39 (1H, d, J=7.07 Hz),8.19 (1H, d, J=1.22 Hz), 7.98 (1H, s), 7.87 (1H, d, J=1.22 Hz), 7.79(1H, d, J=8.54 Hz), 7.75 (1H, d, J=1.95 Hz), 7.74 (1H, s), 7.44 (1H, d,J=4.88 Hz), 7.42 (1H, dd, J=8.54, 1.95 Hz), 3.88 (3H, s), 3.69 (1H, dtt,J=7.07, 6.34, 6.34 Hz), 3.19 (1H, tt, J=6.83, 6.83 Hz), 1.26 (6H, d,J=6.34 Hz), 1.14 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 484 [M+H]⁺.

Example 1122-(Tert-butylamino)-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(112)

According to Example 109, compound (112) (the second stage yield: 62%)was prepared using 4-bromo-2-(tert-butylamino)benzonitrile instead of4-bromo-2-(ethylamino)benzonitrile.

¹H-NMR (DMSO-d₆) δ: 8.77 (1H, d, J=4.88 Hz), 8.64 (1H, s), 8.19 (1H, s),8.11 (1H, d, J=1.71 Hz), 7.98 (1H, s), 7.88 (1H, s), 7.77 (1H, d, J=8.54Hz), 7.74 (1H, s), 7.44 (1H, d, J=4.88 Hz), 7.43 (1H, dd, J=8.54, 1.71Hz), 3.88 (3H, s), 3.20 (1H, tt, J=6.83, 6.83 Hz), 1.45 (9H, s), 1.14(6H, d, J=6.83 Hz); LRMS (ESI) m/z 498 [M+H]⁺.

Example 1132-(2,2-Difluoroethylamino)-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(113)

According to Example 109, compound (113) (the second stage yield: 27%)was prepared as a white solid using4-bromo-2-(2,2-difluoroethylamino)benzonitrile instead of4-bromo-2-(ethylamino)benzonitrile.

¹H-NMR (DMSO-d₆) δ: 8.78 (1H, d, J=5.12 Hz), 8.18 (1H, d, J=1.22 Hz),7.97 (1H, s), 7.96 (1H, d, J=1.71 Hz), 7.86 (1H, d, J=1.22 Hz), 7.77(1H, dd, J=8.54, 1.71 Hz), 7.73 (1H, d, J=0.73 Hz), 7.71 (1H, d, J=8.54Hz), 7.47 (1H, d, J=5.12 Hz), 6.64 (1H, t, J=6.22 Hz), 6.22 (1H, tt,J=55.62, 3.74 Hz), 3.86 (3H, s), 3.78-3.68 (2H, m), 3.19 (1H, tt,J=6.83, 6.83 Hz), 1.12 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 506 [M+H]⁺.

Example 1144-{3-Isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(2,2,2-trifluoroethylamino)benzamide(114)

According to Example 109, compound (114) (the second stage yield: 1%)was prepared using 4-bromo-2-(2,2,2-trifluoroethyl)benzonitrile insteadof 4-bromo-2-(ethylamino)benzonitrile.

¹H-NMR (DMSO-d₆) δ: 8.90 (1H, t, J=6.59 Hz), 8.78 (1H, d, J=4.88 Hz),8.19 (1H, s), 7.99 (1H, s), 7.88 (2H, s), 7.87 (1H, d, J=9.27 Hz), 7.74(1H, s), 7.66 (1H, dd, J=9.27, 1.95 Hz), 7.46 (1H, d, J=4.88 Hz),4.21-4.14 (2H, m), 3.88 (3H, s), 3.21 (1H, tt, J=7.07, 7.07 Hz), 1.14(6H, d, J=7.07 Hz); LRMS (ESI) m/z 524 [M+H]⁺.

Example 1154-{3-Isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-{2-(pyrrolidin-1-yl)ethylamino}benzamide(115)

According to Example 109, compound (115) (the second stage yield: 5%)was prepared using 5-bromo-2-{2-(pyrrolidin-1-yl)ethylamino}benzonitrileinstead of 4-bromo-2-(ethylamino)benzonitrile.

¹H-NMR (DMSO-d₆) δ: 8.77 (1H, d, J=4.88 Hz), 8.50 (1H, t, J=4.88 Hz),8.19 (1H, s), 7.98 (1H, s), 7.87 (1H, s), 7.78 (1H, d, J=8.54 Hz), 7.74(1H, s), 7.72 (1H, d, J=1.71 Hz), 7.50 (1H, dd, J=8.54, 1.71 Hz), 7.45(1H, d, J=4.88 Hz), 3.88 (3H, s), 3.30 (2H, dt, J=4.88, 6.34 Hz), 3.19(1H, tt, J=6.83, 6.83 Hz), 2.72 (2H, t, J=6.34 Hz), 2.56-2.53 (4H, m),1.72-1.70 (4H, m), 1.14 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 539 [M+H]⁺.

Example 1165-{3-Isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}picolinamide(116)

According to Example 109, compound (116) (the second stage yield: 7%)was prepared as a white solid using 5-bromo-picolinenitrile instead of4-bromo-2-(ethylamino)benzonitrile.

¹H-NMR (DMSO-d₆) δ: 9.60 (1H, d, J=2.44 Hz), 8.84 (1H, dd, J=8.78, 2.44Hz), 8.83 (1H, d, J=4.88 Hz), 8.26 (1H, d, J=8.78 Hz), 8.20 (1H, d,J=1.22 Hz), 8.13 (1H, brs), 7.98 (1H, s), 7.88 (1H, d, J=1.22 Hz), 7.74(1H, s), 7.69 (1H, brs), 7.52 (1H, d, J=4.88 Hz), 3.87 (3H, s), 3.23(1H, tt, J=6.83, 6.83 Hz), 1.15 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 428[M+H]⁺.

Example 1175-{3-Isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-6-methylpicolinamide(117)

According to Example 109, compound (117) (the second stage yield: 5%)was prepared as a yellow solid using 5-bromo-6-methylpicolinenitrileinstead of 4-bromo-2-(ethylamino)benzonitrile.

¹H-NMR (DMSO-d₆) δ: 8.68 (1H, d, J=4.88 Hz), 8.21 (1H, d, J=1.22 Hz),8.14 (1H, brs), 8.13 (1H, d, J=8.05 Hz), 8.07 (1H, d, J=8.05 Hz), 7.98(1H, s), 7.90 (1H, d, J=1.22 Hz), 7.76 (1H, brs), 7.74 (1H, s), 7.44(1H, d, J=4.88 Hz), 3.87 (3H, s), 3.24 (1H, tt, J=6.83, 6.83 Hz), 2.46(3H, s), 1.12 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 442 [M+H]⁺.

Example 1185-{3-Isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-4-methylpicolinamide(118)

According to Example 109, compound (118) (the second stage yield: 2%)was prepared using 5-bromo-4-methylpicolinenitrile instead of4-bromo-2-(ethylamino)benzonitrile.

¹H-NMR (DMSO-d₆) δ: 8.75 (1H, s), 8.69 (1H, d, J=4.88 Hz), 8.22 (1H, d,J=1.22 Hz), 8.20 (1H, brs), 8.19 (1H, s), 7.99 (1H, s), 7.90 (1H, d,J=1.22 Hz), 7.76 (1H, brs), 7.75 (1H, s), 7.46 (1H, d, J=4.88 Hz), 3.88(3H, s), 3.26 (1H, tt, J=6.83, 6.83 Hz), 2.33 (3H, s), 1.13 (6H, d,J=6.83 Hz); LRMS (ESI) m/z 442 [M+H]⁺.

Example 1195-{3-Isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-methylpicolinamide(119)

According to Example 109, compound (119) (the second stage yield: 4%)was prepared using 5-bromo-3-methylpicolinenitrile instead of4-bromo-2-(ethylamino)benzonitrile.

¹H-NMR (DMSO-d₆) δ: 9.40 (1H, d, J=2.20 Hz), 8.84 (1H, d, J=4.88 Hz),8.57 (1H, d, J=2.20 Hz), 8.21 (1H, d, J=0.73 Hz), 8.03 (1H, brs), 7.99(1H, s), 7.89 (1H, d, J=0.73 Hz), 7.75 (1H, s), 7.53 (1H, brs), 7.52(1H, d, J=4.88 Hz), 3.88 (3H, s), 3.23 (1H, tt, J=6.83, 6.83 Hz), 2.69(3H, s), 1.16 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 442 [M+H]⁺.

Example 1204-{3-Isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-(isopropylamino)benzamide(120) Example 120(1)4-{4-Chloro-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-(isopropylamino)benzonitrile(120a)

Compound (107a) (0.100 g) and sodium triacetoxyborohydride (0.130 g)were suspended in dichloromethane (1.6 mL), and trifluoroacetic acid(0.3 mL) and acetone (0.050 mL) were added to the resulting suspensionat 0° C., followed by stirring at 0° C. for 20 min. Saturated sodiumbicarbonate water was added to the reaction solution, and the organiclayer was washed with saturated saline. The organic layer after thewashing was dried over anhydrous sodium sulfate, and the solvent wasdistilled away. Methanol and water were added to the residue, and theprecipitate was collected by filtration and dried under reduced pressureto obtain compound (120a) (0.100 g, 930) as a brown solid.

¹H-NMR (DMSO-d₆) δ: 8.51 (1H, d, J=5.12 Hz), 7.64 (1H, d, J=8.05 Hz),7.48 (1H, d, J=5.12 Hz), 7.27 (1H, s), 7.13 (1H, d, J=8.05 Hz), 5.75(1H, d, J=7.56 Hz), 3.80-3.72 (2H, m), 1.42 (6H, d, J=6.83 Hz), 1.13(6H, d, J=6.34 Hz); LRMS (ESI) m/z 354 [M+H]⁺.

Example 120(2)4-{3-Isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-(isopropylamino)benzamide(120)

According to Example 107(2), compound (120) (the second stage yield:47%) was prepared as a white solid using compound (120a) instead ofcompound (107a).

¹H-NMR (DMSO-d₆) δ: 8.68 (1H, d, J=4.88 Hz), 8.19 (1H, s), 8.01 (1H, s),7.98 (1H, s), 7.88 (1H, s), 7.74 (1H, s), 7.53 (1H, d, J=8.29 Hz), 7.42(1H, d, J=4.88 Hz), 7.38 (1H, s), 7.37 (1H, d, J=1.22 Hz), 7.26 (1H, dd,J=8.29, 1.22 Hz), 5.37 (1H, d, J=7.07 Hz), 3.87 (3H, s), 3.76 (1H, ttd,J=6.59, 6.59, 7.07 Hz), 3.21 (1H, tt, J=6.83, 6.83 Hz), 1.14 (6H, d,J=6.83 Hz), 1.12 (6H, d, J=6.59 Hz); LRMS (ESI) m/z 484 [M+H]⁺.

Example 1213-(Ethylamino)-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(121) Example 121(1)4-{4-Chloro-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-(ethylamino)benzamide(121a)

According to Example 120(1), compound (121a) (92%) was prepared as abrown solid using acetaldehyde instead of acetone.

¹H-NMR (DMSO-d₆) δ: 8.49 (1H, d, J=5.12 Hz), 7.56 (1H, d, J=7.81 Hz),7.46 (1H, d, J=5.12 Hz), 7.22 (1H, s), 7.13 (1H, d, J=7.81 Hz), 5.80(1H, t, J=4.88 Hz), 3.74 (1H, tt, J=7.07, 7.07 Hz), 2.75 (2H, q, J=6.83Hz), 1.43 (6H, d, J=7.07 Hz), 0.71 (3H, t, J=6.83 Hz); LRMS (ESI) m/z340 [M+H]⁺.

Example 121(2)3-(Ethylamino)-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(121)

According to Example 107(2), compound (121) (45%) was prepared usingcompound (121a) instead of compound (107a).

¹H-NMR (DMSO-d₆) δ: 9.39 (1H, d, J=4.88 Hz), 8.90 (1H, d, J=1.22 Hz),8.73 (1H, brs), 8.71 (1H, s), 8.59 (1H, d, J=1.22 Hz), 8.47 (1H, s),8.20 (1H, d, J=8.05 Hz), 8.13 (1H, d, J=4.88 Hz), 8.10 (1H, brs), 8.06(1H, d, J=1.71 Hz), 7.98 (1H, dd, J=8.05, 1.71 Hz), 6.13 (1H, t, J=5.24Hz), 4.59 (3H, s), 3.95-3.86 (3H, m), 1.87 (3H, t, J=7.07 Hz), 1.85 (6H,d, J=6.83 Hz); LRMS (ESI) m/z 470 [M+H]⁺.

Example 1224-{3-Isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-(propylamino)benzamide(122) Example 122(1)4-{4-Chloro-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-(propylamino)benzamide(122a)

According to Example 120(1), compound (122a) (97%) was prepared as abrownish-yellow solid using propionaldehyde dimethylacetal instead ofacetone.

¹H-NMR (DMSO-d₆) δ: 8.48 (1H, d, J=5.12 Hz), 7.55 (1H, d, J=8.05 Hz),7.46 (1H, d, J=5.12 Hz), 7.22 (1H, d, J=1.34 Hz), 7.11 (1H, dd, J=8.05,1.34 Hz), 5.83 (1H, t, J=5.37 Hz), 3.74 (1H, tt, J=6.83, 6.83 Hz), 3.08(2H, q, J=6.34 Hz), 1.54-1.51 (2H, m), 1.42 (6H, d, J=6.83 Hz), 0.90(3H, t, J=7.44 Hz); LRMS (ESI) m/z 354 [M+H]⁺.

Example 122(2)4-{3-Isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-(propylamino)benzamide(122)

According to Example 107(2), compound (122) (the second stage yield:54%) was prepared using compound (122a) instead of compound (107a).

¹H-NMR (DMSO-d₆) δ: 9.39 (1H, d, J=4.88 Hz), 8.90 (1H, s), 8.74 (1H,brs), 8.71 (1H, s), 8.59 (1H, s), 8.47 (1H, s), 8.20 (1H, d, J=8.29 Hz),8.13 (1H, d, J=4.88 Hz), 8.10 (1H, brs), 8.06 (1H, s), 7.97 (1H, d,J=8.29 Hz), 6.18 (1H, t, J=5.12 Hz), 4.59 (3H, s), 3.93 (1H, tt, J=6.83,6.83 Hz), 3.84 (2H, q, J=6.18 Hz), 2.27 (2H, tdt, J=7.07, 5.12, 7.02Hz), 1.84 (6H, d, J=6.83 Hz), 1.65 (3H, t, J=7.07 Hz); LRMS (ESI) m/z484 [M+H]⁺.

Example 1233-(2,2-Difluoroethylamino)4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(123) Example 123(1)4-{4-Chloro-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-(2,2-difluoroethylamino)benzonitrile(123a)

According to Example 120(1), compound (123a) (93%) was prepared as ayellow solid using difluoroacetaldehyde ethyl hemiacetal instead ofacetone.

¹H-NMR (DMSO-d₆) δ: 8.49 (1H, d, J=5.12 Hz), 7.58 (1H, d, J=8.05 Hz),7.48 (1H, s), 7.47 (1H, d, J=5.12 Hz), 7.22 (1H, dd, J=8.05, 1.46 Hz),6.14 (1H, tt, J=55.86, 3.90 Hz), 6.10 (1H, t, J=6.10 Hz), 3.73 (1H, tt,J=6.83, 6.83 Hz), 3.70-3.61 (2H, m), 1.43 (6H, d, J=6.83 Hz); LRMS (ESI)m/z 376 [M+H]⁺.

Example 123(2)4-{3-Isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-(2,2-difluoroethylamino)benzamide(123)

According to Example 107(2), compound (123) (220) was prepared as ayellow solid using compound (123a) instead of (107a).

¹H-NMR (DMSO-d₆) δ: 8.68 (1H, d, J=4.88 Hz), 8.31 (1H, s), 8.18 (1H, d,J=1.22 Hz), 8.05 (1H, brs), 7.99 (1H, s), 7.87 (1H, d, J=1.22 Hz), 7.75(1H, s), 7.51 (1H, d, J=8.05 Hz), 7.48 (1H, d, J=1.71 Hz), 7.43 (1H,brs), 7.42 (1H, d, J=4.88 Hz), 7.34 (1H, dd, J=8.05, 1.71 Hz), 6.18 (1H,tt, J=55.74, 3.82 Hz), 5.80 (1H, t, J=6.22 Hz), 3.88 (3H, s), 3.71-3.61(2H, m), 3.22 (1H, tt, J=6.83, 6.83 Hz), 1.12 (6H, d, J=6.83 Hz); LRMS(ESI) m/z 506 [M+H]⁺.

Example 1243-Cyano-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(124) Example 124(1)3-Cyano-4-(4-iodo-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl)benzamide(124a)

According to Example 97(4),5-form-2-(4-iodo-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl)benzonitrile(32%) was prepared using (100a) instead of compound (97c) and using2-fluoro-5-formbenzonitrile instead of 2-bromo-4-fluorobenzonitrile.5-Form-2-(4-iodo-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl)benzonitrile(0.470 g), sodium chlorite (0.377 g), sodium dihydrogenphosphate (0.134g), and 2-methyl-2-butene (0.540 mL) were dissolved in tert-butanol (7.5mL) and water (2.2 mL), followed by stirring at room temperature for 1hr. The reaction solution was distributed between chloroform and water.The organic layer was dried over anhydrous sodium sulfate to obtain3-cyano-4-(4-iodo-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl)benzoicacid, which was used in the subsequent reaction without being purified.This3-cyano-4-(4-iodo-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl)benzoicacid, HATU (0.373 g), and diisopropylethylamine (0.758 mL) weredissolved in DMF (3.0 mL), and ammonia water (0.660 mL, 23% in water)was added to the resulting solution, followed by stirring at 50° C. for20 hr. Water was added to the reaction solution, and the precipitate wascollected by filtration and dried under reduced pressure to obtaincompound (124a) (0.325 g, the second stage yield: 67%) as a white solid.

¹H-NMR (DMSO-d₆) δ: 8.49 (1H, d, J=2.20 Hz), 8.34 (1H, dd, J=8.66, 2.20Hz), 8.27 (1H, d, J=8.66 Hz), 8.26 (1H, brs), 8.22 (1H, d, J=4.88 Hz),7.95 (1H, d, J=4.88 Hz), 7.72 (1H, brs), 3.96 (1H, tt, J=6.59, 6.59 Hz),1.47 (6H, d, J=6.59 Hz); LRMS (ESI) m/z 432 [M+H]⁺.

Example 124(2)3-Cyano-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(124)

According to Example 97(2), compound (124) (13%) was prepared as a whitesolid using compound (124a) instead of compound (97a) and using4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazole hydrochloride instead of4-phenyl-1H-imidazole.

¹H-NMR (DMSO-d₆) δ: 8.77 (1H, dd, J=4.88, 0.98 Hz), 8.52 (1H, s), 8.36(1H, t, J=8.78 Hz), 8.32 (1H, s), 8.30 (1H, d, J=0.49 Hz), 8.27 (1H,brs), 8.23 (1H, s), 7.98 (1H, s), 7.91 (1H, s), 7.74 (2H, s), 7.53 (1H,dd, J=4.88, 0.98 Hz), 3.87 (3H, s), 3.25 (1H, tt, J=6.59, 6.59 Hz), 1.14(6H, d, J=6.59 Hz); LRMS (ESI) m/z 452 [M+H]⁺.

Example 1253-Formyl-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazclo[3,4-b]pyridin-1-yl}benzamide(125) Example 125(1)3-Formyl-4-{4-iodo-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(125a)

Compound (100a) (2.0 g), cesium carbonate (3.41 g), and4-fluoro-3-formylbenzonitrile (1.25 g) were suspended in acetonitrile(23 mL), followed by reflux for 3 hr. The reaction solution wasdistributed between chloroform and water, and the organic layer waswashed with saturated saline. The organic layer after the washing wasdried over anhydrous sodium sulfate, and then the solvent was distilledaway. The residue was purified by neutral silica gel columnchromatography (hexane/ethyl acetate) to obtain compound (125a) (2.00 g,67%) as a white solid.

¹H-NMR (DMSO-d₆) δ: 9.93 (1H, s), 8.30-8.24 (3H, m), 8.20 (1H, d, J=4.88Hz), 7.96 (1H, d, J=4.88 Hz), 3.95 (1H, tt, J=6.83, 6.83 Hz), 1.44 (6H,d, J=6.83 Hz); LRMS (ESI) m/z 417 [M+H]⁺.

Example 125(2)3-Formyl-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(125)

According to Example 97(2),3-formyl-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrilewas prepared using compound (125a) instead of compound (97a) and using4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazole hydrochloride instead of4-phenyl-1H-imidazole and was used in the subsequent reaction withoutbeing purified. According to Example 1(7), compound (125) (the secondstage yield: 17%) was prepared as a white solid using3-formyl-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ: 9.89 (1H, d, J=0.98 Hz), 8.69 (1H, d, J=4.88 Hz),8.43 (1H, s), 8.29 (1H, dd, J=8.29, 2.20 Hz), 8.26 (1H, brs), 8.16 (1H,s), 8.01 (1H, d, J=8.29 Hz), 7.95 (1H, s), 7.85 (1H, s), 7.70 (1H, s),7.58 (1H, brs), 7.46 (2H, d, J=4.88 Hz), 3.83 (3H, s), 3.20 (1H, tt,J=6.83, 6.83 Hz), 1.09 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 455 [M+H]⁺.

Example 1263-{(Dimethylamino)methyl}-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(126)

Compound (125a) (0.500 g), 2-picoline-borane complex (0.166 g), anddimethylamine (0.216 mL) were dissolved in acetic acid (1.0 mL) andmethanol (10 mL), followed by stirring at room temperature for 12 hr.The reaction solution was concentrated, and the residue was purified bybasic silica gel column chromatography (hexane/ethyl acetate) to obtain3-{(dimethylamino)methyl}-4-{4-iodo-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(0.213 g, 40%). This3-{(dimethylamino)methyl}-4-{4-iodo-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrilewas dissolved in DMSO (1.6 mL), and a hydrogen peroxide solution (30 wt%) (0.060 mL) and a 4 mol % aqueous sodium hydroxide solution (0.132 mL)were added to the resulting solution, followed by stirring at roomtemperature for 20 min. Water was added to the reaction solution, andthe precipitate was collected by filtration and was dried under reducedpressure to obtain3-{(dimethylamino)methyl}-4-{4-iodo-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(0.144 g, 65%). According to Example 97(2), compound (126) (64%) wasprepared as a white solid using3-{(dimethylamino)methyl}-4-{4-iodo-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamideinstead of compound (97a) and using4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazole hydrochloride instead of4-phenyl-1H-imidazole.

¹H-NMR (DMSO-d₆) δ: 8.58 (1H, d, J=4.88 Hz), 8.16 (1H, d, J=1.22 Hz),8.12 (1H, d, J=1.95 Hz), 8.08 (1H, brs), 7.94 (1H, s), 7.90 (1H, dd,J=8.05, 1.95 Hz), 7.86 (1H, d, J=1.22 Hz), 7.70 (1H, s), 7.54 (1H, d,J=8.05 Hz), 7.44 (1H, brs), 7.34 (1H, d, J=4.88 Hz), 3.83 (3H, s), 3.33(2H, s), 3.19 (1H, tt, J=6.38, 6.38 Hz), 1.90 (6H, s), 1.08 (6H, d,J=6.83 Hz); LRMS (ESI) m/z 484 [M+H]⁺.

Example 1274-{3-Isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-(morpholinomethyl)benzamide(127)

According to Example 126, compound (127) (the third stage yield: 28%)was prepared using morpholine instead of dimethylamine.

¹H-NMR (DMSO-d₆) δ: 8.57 (1H, d, J=4.88 Hz), 8.14 (1H, d, J=1.22 Hz),8.08 (1H, brs), 8.03 (1H, d, J=2.20 Hz), 7.95 (1H, s), 7.93 (1H, dd,J=8.05, 2.20 Hz), 7.83 (1H, d, J=1.22 Hz), 7.72 (1H, s), 7.57 (1H, d,J=8.05 Hz), 7.47 (1H, brs), 7.34 (1H, d, J=4.88 Hz), 3.83 (3H, s), 3.43(2H, s), 3.20 (2H, tt, J=6.59, 6.59 Hz), 3.08-3.06 (4H, m), 1.96-1.94(4H, m), 1.07 (6H, d, J=6.59 Hz); LRMS (ESI) m/z 526 [M+H]⁺.

Example 1284-{3-Isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-methoxybenzamide(128)

According to Example 80, compound (128) (the second stage yield: 17%)was prepared as a white solid using compound (100b) instead of compound(6c) and using 4-fluoro-3-methoxybenzonitrile instead of4-fluoro-3-methylbenzonitrile.

¹H-NMR (DMSO-d₆) δ: 8.60 (1H, d, J=4.88 Hz), 8.21 (1H, s), 8.17 (1H,brs), 7.98 (1H, s), 7.89 (1H, s), 7.74 (2H, s), 7.65 (1H, d, J=8.05 Hz),7.56 (1H, brs), 7.51 (1H, d, J=8.05 Hz), 7.35 (1H, d, J=4.88 Hz), 3.88(3H, s), 3.80 (3H, s), 3.21 (1H, tt, J=6.83, 6.83 Hz), 1.10 (6H, d,J=6.83 Hz); LRMS (ESI) m/z 456 [M+H]⁺.

Example 1294-{3-Isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2,3-dimethylbenzamide(129)

According to Example 80, compound (129) (the second stage yield: 20%)was prepared as a white solid using compound (100b) instead of compound(6c) and using 4-fluoro-2,3-dimethylbenzonitrile instead of4-fluoro-3-methylbenzonitrile.

¹H-NMR (DMSO-d₆) δ: 8.61 (1H, d, J=4.88 Hz), 8.21 (1H, d, J=1.22 Hz),7.98 (1H, s), 7.90 (1H, d, J=1.22 Hz), 7.85 (1H, brs), 7.75 (1H, s),7.53 (1H, brs), 7.38 (1H, d, J=4.88 Hz), 7.33 (1H, d, J=8.05 Hz), 7.28(1H, d, J=8.05 Hz), 3.88 (3H, s), 3.23 (1H, tt, J=6.83, 6.83 Hz), 2.37(3H, s), 1.93 (3H, s), 1.11 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 455[M+H]⁺.

Example 1302-Fluoro-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-methylbenzamide(130)

According to Example 109, compound (130) (the second stage yield: 29%)was prepared as a white solid using4-bromo-2-fluoro-3-methylbenzonitrile instead of4-bromo-2-(ethylamino)benzonitrile.

¹H-NMR (DMSO-d₆) δ: 8.67 (1H, d, J=4.88 Hz), 8.21 (1H, d, J=1.22 Hz),7.99 (1H, s), 7.90 (1H, d, J=1.22 Hz), 7.87 (1H, brs), 7.76 (1H, brs),7.75 (1H, s), 7.65 (1H, t, J=7.93 Hz), 7.43 (1H, d, J=4.88 Hz), 7.42(1H, d, J=7.93 Hz), 3.88 (3H, s), 3.24 (1H, tt, J=6.83, 6.83 Hz), 2.08(3H, d, J=2.20 Hz), 1.12 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 459 [M+H]⁺.

Example 1313-Ethyl-2-fluoro-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(131)

According to Example 109, compound (131) (the second stage yield: 22%)was prepared as a white solid using 4-bromo-3-ethyl-2-fluorobenzonitrileinstead of 4-bromo-2-(ethylamino)benzonitrile.

¹H-NMR (DMSO-d₆) δ: 8.66 (1H, d, J=5.12 Hz), 8.22 (1H, d, J=1.22 Hz),7.99 (1H, s), 7.91 (1H, d, J=1.22 Hz), 7.89 (1H, brs), 7.76 (1H, brs),7.75 (1H, s), 7.65 (1H, t, J=7.93 Hz), 7.43 (1H, d, J=7.93 Hz), 7.43(1H, d, J=5.12 Hz), 3.88 (3H, s), 3.24 (1H, tt, J=6.83, 6.83 Hz), 2.46(2H, q, J=7.44 Hz), 1.12 (6H, d, J=6.83 Hz), 1.08 (3H, t, J=7.44 Hz);LRMS (ESI) m/z 473 [M+H]⁺.

Example 1322-(Ethylamino)-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-methylbenzamide(132)

According to Example 109, compound (132) (the second stage yield: 45%)was obtained as a white solid using4-bromo-2-(ethylamino)-3-methylbenzonitrile instead of4-bromo-2-(ethylamino)benzonitrile.

¹H-NMR (DMSO-d₆) δ: 8.64 (1H, d, J=4.88 Hz), 8.21 (1H, d, J=1.22 Hz),8.08 (1H, brs), 7.98 (1H, s), 7.90 (1H, d, J=1.22 Hz), 7.75 (1H, s),7.56 (1H, d, J=8.54 Hz), 7.50 (1H, brs), 7.38 (1H, d, J=4.88 Hz), 6.99(1H, d, J=8.29 Hz), 6.54 (1H, t, J=6.59 Hz), 3.88 (3H, s), 3.22 (1H, tt,J=6.83, 6.83 Hz), 3.08 (2H, dq, J=6.59, 6.83 Hz), 1.92 (3H, s), 1.13(3H, t, J=6.83 Hz), 1.12 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 484 [M+H]⁺.

Examples 133 and 1343-Ethyl-2-(ethylamino)-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(133)2-Amino-3-ethyl-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(134)

According to Example 109, compound (133) (the second stage yield: 6%)was prepared as a white solid using4-bromo-3-ethyl-2-(ethylamino)benzonitrile instead of4-bromo-2-(ethylamino)benzonitrile. Compound (134) (the second stageyield: 2%) was prepared as a white solid by this reaction.

Compound (133)

¹H-NMR (DMSO-d₆) δ: 8.61 (1H, d, J=4.88 Hz), 8.21 (1H, d, J=1.22 Hz),8.03 (1H, brs), 7.98 (1H, s), 7.91 (1H, d, J=1.22 Hz), 7.75 (1H, s),7.50 (1H, brs), 7.46 (1H, d, J=8.05 Hz), 7.37 (1H, d, J=4.88 Hz), 6.90(1H, d, J=8.05 Hz), 5.76 (1H, t, J=6.59 Hz), 3.88 (3H, s), 3.22 (1H, tt,J=6.83, 6.83 Hz), 3.09 (2H, dq, J=6.59, 7.07 Hz), 2.44 (2H, q, J=7.32Hz), 1.14 (3H, t, J=7.07 Hz), 1.11 (6H, d, J=6.83 Hz), 0.82 (3H, t,J=7.32 Hz); LRMS (ESI) m/z 498 [M+H]⁺.

Compound (134)

¹H-NMR (DMSO-d₆) δ: 8.78 (1H, d, J=4.88 Hz), 8.35 (1H, t, J=4.88 Hz),8.19 (1H, d, J=0.98 Hz), 7.99 (1H, s), 7.88 (1H, d, J=0.98 Hz), 7.88(1H, brs), 7.80 (1H, d, J=8.54 Hz), 7.74 (1H, s), 7.70 (1H, d, J=1.95Hz), 7.48 (1H, dd, J=8.54, 1.95 Hz), 7.45 (1H, d, J=4.88 Hz), 7.20 (1H,s), 3.88 (3H, s), 3.27-3.17 (3H, m), 1.28 (3H, t, J=7.20 Hz), 1.14 (6H,d, J=6.59 Hz); LRMS (ESI) m/z 470 [M+H]⁺.

Example 1354-{3-Isopropyl-4-(4-(pyridin-3-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-methylbenzamide(135) Example 135(1)3-Isopropyl-4-{4-(pyridin-3-yl)-1H-imidazol-1-yl}-1H-pyrazolo[3,4-b]pyridine(135a)

According to Example 100(2), compound (135a) (the third stage yield:31%) was prepared as a white solid using 4-(pyridin-3-yl)-1H-imidazolehydrochloride instead of 4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazolehydrochloride.

¹H-NMR (DMSO-d₆) δ: 13.73 (1H, s), 9.11 (1H, d, J=1.71 Hz), 8.64 (1H, d,J=4.88 Hz), 8.48 (1H, dd, J=4.76, 1.71 Hz), 8.38 (1H, d, J=1.46 Hz),8.30 (1H, d, J=1.46 Hz), 8.22 (1H, dt, J=8.05, 1.71 Hz), 7.45 (1H, dd,J=8.05, 4.76 Hz), 7.31 (1H, d, J=4.88 Hz), 3.11 (1H, tt, J=6.83, 6.83Hz), 1.08 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 305 [M+H]⁺.

Example 135(2)4-{3-Isopropyl-4-(4-(pyridin-3-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-methylbenzamide(135)

According to Example 80, compound (135) (the second stage yield: 65%)was prepared as a white solid using compound (135a) instead of compound(6c).

¹H-NMR (DMSO-d₆) δ: 9.11 (1H, d, J=1.71 Hz), 8.69 (1H, d, J=4.88 Hz),8.48 (1H, dd, J=4.76, 1.71 Hz), 8.46 (1H, d, J=1.22 Hz), 8.38 (1H, d,J=1.22 Hz), 8.23 (1H, dt, J=7.89, 1.95 Hz), 8.09 (1H, brs), 7.98 (1H, d,J=1.83 Hz), 7.88 (1H, dd, J=8.29, 1.83 Hz), 7.55 (1H, d, J=8.29 Hz),7.49 (1H, brs), 7.47 (1H, d, J=4.88 Hz), 7.46 (1H, dd, J=4.63, 7.89 Hz),3.25-3.18 (1H, m), 2.19 (3H, s), 1.12 (6H, d, J=6.59 Hz); LRMS (ESI) m/z438 [M+H]⁺.

Example 1363-Ethyl-4-{3-isopropyl-4-(4-(pyridin-3-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(136)

According to Example 80, compound (136) (the second stage yield: 12%)was prepared as a white solid using compound (135a) instead of compound(6c) and using 4-fluoro-3-ethylbenzonitrile instead of4-fluoro-3-methylbenzonitrile.

¹H-NMR (DMSO-d₆) δ: 9.13 (1H, d, J=1.46 Hz), 8.68 (1H, d, J=4.88 Hz),8.50 (1H, dd, J=4.63, 1.46 Hz), 8.48 (1H, d, J=1.22 Hz), 8.40 (1H, d,J=1.22 Hz), 8.24 (1H, dt, J=7.89, 1.95 Hz), 8.13 (1H, brs), 8.01 (1H, d,J=1.95 Hz), 7.90 (1H, dd, J=8.05, 1.95 Hz), 7.54 (1H, d, J=8.05 Hz),7.52 (1H, brs), 7.48 (1H, d, J=4.88 Hz), 7.47 (1H, dd, J=4.63, 7.89 Hz),3.23 (1H, tt, J=6.59, 6.59 Hz), 2.50 (2H, q, J=7.56 Hz), 1.13 (6H, d,J=6.59 Hz), 1.04 (3H, t, J=7.56 Hz); LRMS (ESI) m/z 452 [M+H]⁺.

Example 1373-Isopropyl-4-{3-isopropyl-4-(4-(pyridin-3-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(137)

According to Example 80, compound (137) (the second stage yield: 22%)was prepared as a white solid using compound (135a) instead of compound(6c) and using 3-isopropyl-4-fluorobenzonitrile instead of4-fluoro-3-methylbenzonitrile.

¹H-NMR (DMSO-d₆) δ: 9.12 (1H, d, J=1.71 Hz), 8.68 (1H, d, J=4.88 Hz),8.50 (1H, dd, J=4.76, 1.71 Hz), 8.48 (1H, d, J=1.22 Hz), 8.40 (1H, d,J=1.22 Hz), 8.24 (1H, dt, J=8.17, 1.95 Hz), 8.17 (1H, brs), 8.09 (1H, d,J=1.95 Hz), 7.89 (1H, dd, J=8.17, 1.95 Hz), 7.52 (1H, brs), 7.50-7.45(3H, m), 3.23 (1H, tt, J=6.83, 6.83 Hz), 2.70 (1H, tt, J=7.07, 7.07 Hz),1.17 (6H, d, J=7.07 Hz), 1.12 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 466[M+H]⁺.

Example 1383-Cyclopropyl-4-{3-isopropyl-4-(4-(pyridin-3-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(138)

According to Example 80, compound (138) (the second stage yield: 2%) wasprepared as a white solid using compound (135a) instead of compound (6c)and using 3-cyclopropyl-4-fluorobenzonitrile instead of4-fluoro-3-methylbenzonitrile.

¹H-NMR (DMSO-d₆) δ: 9.11 (1H, d, J=1.71 Hz), 8.67 (1H, d, J=4.88 Hz),8.49 (1H, dd, J=4.76, 1.71 Hz), 8.46 (1H, d, J=1.22 Hz), 8.38 (1H, d,J=1.22 Hz), 8.24 (1H, dt, J=7.97, 1.95 Hz), 8.13 (1H, brs), 7.84 (1H,dd, J=8.17, 1.95 Hz), 7.61 (1H, d, J=1.95 Hz), 7.51 (1H, d, J=8.17 Hz),7.49 (1H, brs), 7.47 (1H, d, J=4.78 Hz), 7.45 (1H, d, J=4.88 Hz), 3.21(1H, tt, J=6.83, 6.83 Hz), 1.67-1.61 (1H, m), 1.12 (6H, d, J=6.83 Hz),0.74-0.67 (4H, m); LRMS (ESI) m/z 464 [M+H]⁺.

Example 1392-(Ethylamino)-4-{3-isopropyl-4-(4-(pyridin-3-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(139)

According to Example 109, compound (139) (the second stage yield: 52%)was prepared as a white solid using compound (135a) instead of compound(100b).

¹H-NMR (DMSO-d₆) δ: 9.10 (1H, d, J=1.65 Hz), 8.81 (1H, d, J=4.95 Hz),8.48 (1H, dd, J=4.70, 1.57 Hz), 8.42 (1H, d, J=0.99 Hz), 8.35 (2H, d,J=0.99 Hz), 8.22 (1H, dt, J=7.97, 2.02 Hz), 7.80 (1H, d, J=8.74 Hz),7.69 (1H, d, J=2.02 Hz), 7.51 (1H, d, J=4.95 Hz), 7.49-7.43 (2H, m),3.27-3.12 (3H, m), 1.27 (3H, t, J=7.09 Hz), 1.14 (6H, d, J=6.92 Hz);LRMS (ESI) m/z 467 [M+H]⁺.

Example 1404-{3-Isopropyl-4-(4-(pyridin-3-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(isopropylamino)benzamide(140)

According to Example 109, compound (140) (the second stage yield: 19%)was prepared as a white solid using compound (135a) and4-bromo-2-(isopropylamino)benzonitrile instead of compound (100b) and4-bromo-2-(ethylamino)benzonitrile, respectively.

¹H-NMR (DMSO-d₆) δ: 9.10 (1H, d, J=1.65 Hz), 8.81 (1H, d, J=4.95 Hz),8.48 (1H, dd, J=4.78, 1.65 Hz), 8.42 (1H, d, J=0.99 Hz), 8.38 (1H, d,J=7.09 Hz), 8.35 (1H, d, J=0.99 Hz), 8.22 (1H, dt, J=7.91, 1.98 Hz),7.79 (1H, d, J=8.74 Hz), 7.74 (1H, d, J=1.98 Hz), 7.50 (1H, d, J=4.95Hz), 7.46 (1H, dd, J=7.91, 4.78 Hz), 7.42 (1H, dd, J=8.74, 1.98 Hz),3.69 (1H, td, J=6.26, 6.26, 7.09 Hz), 3.18 (1H, tt, J=6.76, 6.76 Hz),1.25 (6H, d, J=6.26 Hz), 1.14 (6H, d, J=6.76 Hz); LRMS (ESI) m/z 481[M+H]⁺.

Example 1412-(Tert-butylamino)-4-{3-isopropyl-4-(4-(pyridin-3-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(141)

According to Example 109, compound (141) (the second stage yield: 58%)was prepared as a white solid using compound (135a) and4-bromo-2-(tert-butylamino)benzonitrile instead of compound (100b) and4-bromo-2-(ethylamino)benzonitrile, respectively.

¹H-NMR (DMSO-d₆) δ: 9.10 (1H, d, J=1.98 Hz), 8.80 (1H, d, J=4.95 Hz),8.63 (1H, s), 8.48 (1H, d, J=4.78 Hz), 8.42 (1H, s), 8.36 (1H, s), 8.22(1H, d, J=7.91 Hz), 8.10 (1H, d, J=1.98 Hz), 7.77 (1H, d, J=8.74 Hz),7.50 (1H, d, J=4.95 Hz), 7.48-7.41 (2H, m), 3.19 (1H, tt, J=6.76, 6.76Hz), 1.45 (9H, s), 1.13 (6H, d, J=6.76 Hz); LRMS (ESI) m/z 495 [M+H]⁺.

Example 1424-{3-Isopropyl-4-(4-(pyridin-3-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-methoxybenzamide(142)

According to Example 80, compound (142) (the second stage yield: 33%)was prepared as a white solid using compound (135a) and4-fluoro-3-methoxybenzonitrile instead of compound (6c) and4-fluoro-3-methylbenzonitrile, respectively.

¹H-NMR (DMSO-d₆) δ: 9.12 (1H, s), 8.65 (1H, d, J=4.88 Hz), 8.49 (1H, d,J=4.63 Hz), 8.46 (1H, d, J=1.22 Hz), 8.39 (1H, d, J=1.22 Hz), 8.24 (1H,dt, J=8.05, 1.95 Hz), 8.18 (1H, brs), 7.76 (1H, d, J=1.71 Hz), 7.65 (1H,dd, J=8.05, 1.71 Hz), 7.57 (1H, brs), 7.52 (1H, d, J=8.05 Hz), 7.47 (1H,dd, J=4.63, 8.55 Hz), 7.43 (1H, d, J=4.88 Hz), 3.80 (3H, s), 3.21 (1H,tt, J=6.83, 6.83 Hz), 1.11 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 454[M+H]⁺.

Example 1434-{4-(4-(1H-Pyrazol-4-yl)-1H-imidazol-1-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(isopropylamino)benzamide(143) Example 143(1)4-{4-(4-(1-(Benzyloxymethyl)-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-bromo-benzonitrile(143a)

According to Example 99(2), compound (143a) (71%) was prepared as a graysolid using compound (36a) instead of compound (99a) and using4-(1-(benzyloxymethyl)-1H-pyrazol-4-yl)-1H-imidazole instead of4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazole hydrochloride.

¹H-NMR (DMSO-d₆) δ: 8.96 (1H, d, J=1.95 Hz), 8.88 (1H, d, J=5.12 Hz),8.62 (1H, dd, J=8.66, 1.95 Hz), 8.25 (2H, s), 8.17 (1H, d, J=8.66 Hz),7.98 (1H, d, J=1.22 Hz), 7.92 (1H, s), 7.58 (1H, d, J=5.12 Hz) 7.38-7.28(5H, m), 5.57 (2H, s), 4.58 (2H, s), 3.24 (1H, tt, J=6.83, 6.83 Hz),1.16 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 593 [M+H]⁺.

Example 143(2)4-{4-(4-(1H-Pyrazol-4-yl)-1H-imidazol-1-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(isopropylamino)benzamide(143)

According to Example 1(6),4-{4-(4-(1-(benzyloxymethyl)-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(isopropylamino)benzonitrile(65%) was prepared using compound (143a) and isopropylamine instead ofcompound (1e) and trans-4-hydroxycyclohexylamine, respectively, and this4-{4-(4-(1-(benzyloxymethyl)-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(isopropylamino)benzonitrilewas dissolved in anisole and trifluoroacetic acid, followed by stirringat 70° C. for 3 hr. The reaction solution was distributed betweenchloroform and a 2 M aqueous sodium hydroxide solution. The organiclayer was dried over anhydrous sodium sulfate, and the solvent wasdistilled away to obtain4-{4-(4-(1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(isopropylamino)benzonitrile,which was used in the subsequent reaction without being purified.Lastly, according to Example 1(7), compound (143) (the second stageyield: 43%) was prepared as a white solid using4-{4-(4-(1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(isopropylamino)benzonitrileinstead of compound (1f).

¹H-NMR (DMSO-d₆) δ: 12.87 (1H, s), 8.78 (1H, d, J=4.88 Hz), 8.35 (1H, t,J=5.00 Hz), 8.20 (1H, d, J=1.22 Hz), 8.02 (1H, s), 7.89 (1H, d, J=1.22Hz), 7.82 (1H, s), 7.80 (1H, d, J=8.78 Hz), 7.71 (1H, d, J=2.20 Hz),7.48 (1H, dd, J=8.78, 2.20 Hz), 7.44 (1H, d, J=4.88 Hz), 3.26-3.16 (3H,m), 1.28 (3H, t, J=7.07 Hz), 1.15 (6H, d, J=6.83 Hz); LRMS (ESI) m/z 470[M+H]⁺.

Example 1444-{4-(4-(1H-Pyrazol-4-yl)-1H-imidazol-1-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(ethylamino)benzamide(144)

According to Example 143(2), compound (144) (the third stage yield: 27%)was prepared as a white solid using ethylamine (2.0 M in THF) instead ofisopropylamine.

¹H-NMR (DMSO-d₆) δ: 12.88 (1H, s), 8.78 (1H, d, J=4.88 Hz), 8.39 (1H, d,J=7.07 Hz), 8.20 (1H, d, J=1.22 Hz), 8.02 (1H, s), 7.89 (1H, s), 7.82(1H, s), 7.80 (1H, d, J=8.78 Hz), 7.75 (1H, d, J=1.95 Hz), 7.44 (1H, d,J=4.88 Hz), 7.43 (1H, dd, J=8.75, 1.95 Hz), 3.69 (1H, dtt, J=7.07, 6.34,6.34 Hz), 3.21 (1H, tt, J=6.83, 6.83 Hz), 1.26 (6H, d, J=6.34 Hz), 1.15(6H, d, J=6.83 Hz); LRMS (ESI) m/z 456 [M+H]⁺.

Example 1453-Chloro-4-{4-(4-(1-ethyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(145)

According to Example 99(2), compound (145) (42%) was prepared as a whitesolid using 4-(1-ethyl-1H-pyrazol-4-yl)-1H-imidazole hydrochlorideinstead of 4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazole hydrochloride.

¹H-NMR (DMSO-d₆) δ: 8.65 (1H, d, J=4.95 Hz), 8.25 (1H, brs), 8.22 (1H,d, J=1.32 Hz), 8.20 (1H, d, J=1.81 Hz), 8.03 (1H, dd, J=8.24, 1.81 Hz),8.02 (1H, s), 7.90 (1H, d, J=1.32 Hz), 7.76 (1H, d, J=8.24 Hz), 7.75(1H, s), 7.69 (1H, brs), 7.41 (1H, d, J=4.95 Hz), 4.16 (2H, q, J=7.25Hz), 3.23 (1H, tt, J=6.76, 6.76 Hz), 1.40 (3H, t, J=7.25 Hz), 1.11 (6H,d, J=6.76 Hz); LRMS (ESI) m/z 475 [M+H]⁺.

Example 1464-{4-(4-(1-Ethyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(ethylamino)benzamide(146)

According to Example 83, compound (146) (the third stage yield: 36%) wasprepared as a white solid using 4-(1-ethyl-1H-pyrazol-4-yl)-1H-imidazolehydrochloride instead of 4-(4-methoxyphenyl)-1H-imidazole and usingethylamine (2.0 M in THF) instead of 4-hydroxycyclohexylamine.

¹H-NMR (DMSO-d₆) δ: 8.77 (1H, d, J=4.95 Hz) 8.34 (1H, t, J=5.11 Hz),8.18 (1H, d, J=1.15 Hz), 8.02 (1H, s), 7.86 (1H, d, J=1.15 Hz), 7.79(1H, d, J=8.74 Hz), 7.74 (1H, s), 7.69 (1H, d, J=2.14 Hz), 7.46 (1H, dd,J=8.74, 2.14 Hz), 7.43 (1H, d, J=4.95 Hz), 4.16 (2H, q, J=7.25 Hz),3.27-3.16 (3H, m), 1.40 (3H, t, J=7.25 Hz), 1.27 (3H, t, J=7.09 Hz),1.13 (6H, d, J=6.76 Hz); LRMS (ESI) m/z 484 [M+H]⁺.

Example 1474-{4-(4-(1-(Difluoromethyl)-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(ethylamino)benzamide(147)

According to Example 83, compound (147) (the third stage yield: 22%) wasprepared as a white solid using4-(1-difluoromethyl-1H-pyrazol-4-yl)-1H-imidazole hydrochloride insteadof 4-(4-methoxyphenyl)-1H-imidazole and using ethylamine (2.0 M in THF)instead of 4-hydroxycyclohexylamine.

¹H-NMR (DMSO-d₆) δ: 8.79 (1H, d, J=4.88 Hz), 8.50 (1H, s), 8.33 (1H, t,J=5.00 Hz), 8.27 (1H, d, J=1.22 Hz), 8.14 (1H, s), 8.06 (1H, d, J=1.22Hz), 7.84 (1H, t, J=59.28 Hz), 7.79 (1H, d, J=8.78 Hz), 7.69 (1H, d,J=1.95 Hz), 7.46 (1H, d, J=4.88 Hz), 7.46 (1H, dd, J=8.78, 1.95 Hz),3.25-3.13 (3H, m), 1.27 (3H, t, J=7.07 Hz), 1.13 (6H, d, J=6.59 Hz);LRMS (ESI) m/z 506 [M+H]⁺.

Example 1484-{4-(4-(1-(Hydroxyethyl)-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(isopropyl)benzamide(148) Example 148(1)4-{4-(4-(1-(Benzyloxyethyl)-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(isopropyl)benzamide(148a)

According to Example 83, compound (148a) (the third stage yield: 38%)was prepared as a white solid using4-(1-benzyloxyethyl-1H-pyrazol-4-yl)-1H-imidazole hydrochloride insteadof 4-(4-methoxyphenyl)-1H-imidazole and using isopropylamine instead of4-hydroxycyclohexylamine.

Example 148(2)4-{4-(4-(1-(Hydroxyethyl)-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(isopropyl)benzamide(148)

According to Example 95, compound (148) (60%) was prepared as a whitesolid using compound (148a) instead of compound (93).

¹H-NMR (DMSO-d₆) δ: 8.77 (1H, d, J=4.88 Hz), 8.38 (1H, d, J=6.83 Hz),8.19 (1H, d, J=1.10 Hz), 7.99 (1H, s), 7.88 (1H, d, J=1.10 Hz), 7.85(1H, brs), 7.78 (1H, d, J=8.78 Hz), 7.76 (1H, s), 7.74 (1H, d, J=1.95Hz), 7.43 (1H, d, J=4.88 Hz), 7.42 (1H, dd, J=8.78, 1.95 Hz), 7.16 (1H,brs), 4.93 (1H, t, J=5.45 Hz), 4.17 (2H, t, J=5.45 Hz), 3.76 (2H, q,J=5.45 Hz), 3.68 (1H, dtt, J=6.34, 6.34, 6.84 Hz), 3.19 (1H, tt, J=6.59,6.59 Hz), 1.25 (6H, d, J=6.34 Hz), 1.13 (6H, d, J=6.59 Hz); LRMS (ESI)m/z 514 [M+H]⁺.

Example 1494-{3-Isopropyl-4-(4-(pyridin-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-methylbenzamide(149)

According to Example 99(1),4-(4-chloro-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl)-3-methylbenzonitrilewas prepared using 4-fluoro-3-methylbenzonitrile instead of4-fluoro-3-chlorobenzonitrile; and according to Example 107(2), compound(149) (the third stage yield: 2%) was prepared using4-(4-chloro-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl)-3-methylbenzonitrileinstead of compound (107a) and using 4-(pyridin-4-yl)-1H-imidazoleinstead of 4-(1-methyl-1H-pyrazol-1-yl)-1H-imidazole hydrochloride.

¹H-NMR (DMSO-d₆) δ: 9.11 (1H, d, J=1.46 Hz), 8.69 (1H, d, J=4.88 Hz),8.48 (1H, dd, J=4.76, 1.46 Hz), 8.46 (1H, d, J=1.22 Hz), 8.38 (1H, d,J=1.22 Hz), 8.23 (1H, dt, J=7.97, 1.95 Hz), 8.09 (1H, brs), 7.98 (1H, d,J=1.71 Hz), 7.88 (1H, dd, J=8.29, 1.71 Hz), 7.55 (1H, d, J=8.29 Hz),7.49 (1H, brs), 7.47 (1H, d, J=4.88 Hz), 7.46 (1H, dd, J=7.97, 4.76 Hz),3.21 (1H, tt, J=6.59, 6.59 Hz), 2.19 (3H, s), 1.12 (7H, d, J=6.59 Hz);LRMS (ESI) m/z 438 [M+H]⁺.

Example 1504-{1-(1-(4-Carbamoyl-2-chlorophenyl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-4-yl)-1H-imidazol-4-yl}-N-isopropylbenzamide(150) Example 150(1)4-{1-(1-(Carbamoyl-2-chlorophenyl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-4-yl)-1H-imidazol-4-yl}benzoicacid (150a)

According to Example 107(2), compound (150a) (the second stage yield:21%) was prepared as a white solid using compound (99a) andethyl-4-(1H-imidazol-4-yl)benzoate instead of compound (107a) and4-(1-methyl-1H-pyrazol-1-yl)-1H-imidazole hydrochloride, respectively.

Example 150(2)4-{1-(1-(4-Carbamoyl-2-chlorophenyl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-4-yl)-1H-imidazol-4-yl}-N-isopropylbenzamide(150)

Compound (150a) (0.07 g), 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimidehydrochloride (0.035 g), hydroxybenzotriazole monohydrate (0.025 g), andisopropylamine (0.085 mL) were dissolved in DMF (0.6 mL), followed bystirring at room temperature for 3 hr. The reaction solution wasdistributed between chloroform and water, and the organic layer waswashed with saturated saline and was dried over anhydrous sodiumsulfate. The solvent was distilled away, and the residue was purified byneutral silica gel column chromatography (chloroform/methanol) to obtaincompound (150) (36%) as a white solid.

¹H-NMR (DMSO-d₆) δ: 8.69 (1H, d, J=4.95 Hz), 8.44 (1H, d, J=1.15 Hz),8.36 (1H, d, J=1.32 Hz), 8.25 (1H, brs), 8.20 (1H, d, J=1.98 Hz), 8.18(1H, d, J=6.92 Hz), 8.04 (1H, dd, J=8.24, 1.98 Hz), 7.96-7.90 (4H, m),7.76 (1H, d, J=8.24 Hz), 7.69 (1H, brs), 7.49 (1H, d, J=4.95 Hz), 4.11(1H, dtt, J=6.76, 6.76, 4.95 Hz), 3.23 (1H, tt, J=6.59, 6.59 Hz), 1.18(6H, d, J=6.59 Hz), 1.12 (6H, d, J=6.76 Hz); LRMS (ESI) m/z 542 [M+H]⁺.

Example 1514-{1-(1-(4-Carbamoyl-2-chlorophenyl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-4-yl)-1H-imidazol-4-yl}-N,N-dimethylbenzamide(151)

According to Example 150(2), compound (151) (16%) was prepared as awhite solid using N,N-dimethylamine instead of isopropylamine.

¹H-NMR (DMSO-d₆) δ: 8.69 (1H, d, J=4.95 Hz), 8.41 (1H, d, J=1.15 Hz),8.35 (1H, d, J=0.99 Hz), 8.25 (1H, brs), 8.20 (1H, d, J=1.98 Hz), 8.04(1H, dd, J=8.24, 1.98 Hz), 7.94 (2H, d, J=8.08 Hz), 7.76 (1H, d, J=8.24Hz), 7.69 (1H, brs), 7.48 (1H, d, J=4.95 Hz), 7.46 (2H, d, J=8.08 Hz),3.25 (1H, tt, J=6.76, 6.76 Hz), 2.98 (6H, s), 1.12 (6H, d, J=6.76 Hz);LRMS (ESI) m/z 528 [M+H]⁺.

Example 1524-{4-(4-(4-Carbamoylphenyl)-1H-imidazol-1-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-chlorobenzamide(152)

According to Example 150(2), compound (152) (32%) was prepared as awhite solid using ammonia water (23% in water) instead ofisopropylamine.

¹H-NMR (DMSO-d₆) δ: 8.69 (1H, d, J=4.95 Hz), 8.44 (1H, d, J=1.32 Hz),8.36 (1H, d, J=1.32 Hz), 8.26 (1H, brs), 8.20 (1H, d, J=1.81 Hz), 8.04(1H, dd, J=8.24, 1.81 Hz), 7.97-7.92 (5H, m), 7.76 (1H, d, J=8.24 Hz),7.69 (1H, brs), 7.49 (1H, d, J=4.95 Hz), 7.33 (1H, brs), 3.23 (1H, tt,J=6.76, 6.76 Hz), 1.13 (6H, d, J=6.76 Hz); LRMS (ESI) m/z 500 [M+H]⁺.

Example 1533-Chloro-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(153) Example 153(1)4-Iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridine (153a)

Normal-butyllithium (a 2.76 M solution in hexane, 37.0 mL) was dropwiseadded to a solution of N,N-diisopropylamine (15.0 mL) in tetrahydrofuran(hereinafter referred to as THF, 200 mL) under a nitrogen atmosphere at−5 to 0° C., and a solution of 2-fluoro-3-iodo-pyridine (21.8 g) in THF(250 mL) was dropwise added to the resulting solution at −78° C.,followed by stirring for 15 min. Subsequently, ethyl2,2,2-trifluoroacetate (14.0 mL) was dropwise added to the reactionsolution at −78° C., followed by stirring at the same temperature for 1hr, and then hydrazine monohydrate (9.5 mL) was added to the reactionsolution, followed by stirring at 60° C. for 1 hr. The reaction solutionwas distributed between ethyl acetate and water, and the organic layerwas washed with saturated saline. The organic layer after the washingwas dried over anhydrous sodium sulfate, and then the solvent wasdistilled away. The residue was purified by neutral silica gel columnchromatography (hexane/ethyl acetate) to obtain compound (153a) (21.0 g,69%) as a white solid.

¹H-NMR (DMSO-d₆) δ: 8.10 (1H, dd, J=4.63, 2.20 Hz), 7.73 (1H, dd,J=4.63, 2.20 Hz); LRMS (ESI) m/z 314 [M+H]⁺.

Example 153(2)3-Chloro-4-{4-iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(153b)

Compound (153a) (5.0 g), cesium carbonate (7.82 g), and3-chloro-4-fluorobenzonitrile (3.0 g) were suspended in acetonitrile (50mL), followed by stirring at 70° C. for 24 hr. The reaction solution wasdistributed between ethyl acetate and an aqueous ammonium chloridesolution, and the organic layer was washed with saturated saline. Theorganic layer after the washing was dried over anhydrous sodium sulfate,and then the solvent was distilled away. Ethanol was added to theresidue, and the precipitate was collected by filtration to obtain3-chloro-4-{4-iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(4.77 g, 66%).3-Chloro-4-{4-iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(2.53 g) was dissolved in DMSO (28 mL). A hydrogen peroxide solution (30wt %) (0.700 mL) and a 4 mol % aqueous sodium hydroxide solution (1.41mL) were added to the resulting solution, followed by stirring at roomtemperature for 20 min. Water was added to the reaction solution, andthe precipitate was collected by filtration and was dried under reducedpressure to obtain compound (153b) (2.26 g, 86%).

¹H-NMR (DMSO-d₆) δ: 8.32 (1H, d, J=4.88 Hz), 8.28 (1H, br s), 8.22 (1H,d, J=1.71 Hz), 8.14 (1H, d, J=4.88 Hz), 8.06 (1H, dd, J=8.05, 1.71 Hz),7.91 (1H, d, J=8.05 Hz), 7.74 (1H, brs); LRMS (ESI) m/z 466 [M+H]⁺.

Example 153(3)3-Chloro-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(153)

According to Example 99(2), compound (153) (71%) was prepared usingcompound (153b) instead of compound (99a).

¹H-NMR (DMSO-d₆) δ: 8.86 (1H, d, J=4.88 Hz), 8.30 (1H, brs), 8.25 (1H,d, J=1.95 Hz), 8.10 (1H, s), 8.08 (1H, dd, J=8.29, 1.95 Hz), 7.96 (1H,s), 7.92 (1H, d, J=8.29 Hz), 7.79 (1H, s), 7.76 (1H, brs), 7.71 (1H, s),7.69 (1H, d, J=4.88 Hz), 3.87 (3H, s); LRMS (ESI) m/z 487 [M+H]⁺.

Example 1543-Methyl-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(154) Example 154(1) 4-Hydrazinyl-3-methylbenzonitrile (154a)

Hydrazine monohydrate (180 mL) was added to4-fluoro-3-methylbenzonitrile (5.0 g), followed by stirring at 100° C.for 4 hr. Water was added to the reaction solution, and the precipitatewas collected by filtration and was dried under reduced pressure toobtain compound (154a) (4.33 g, 79%).

¹H-NMR (DMSO-d₆) δ: 7.41 (1H, dd, J=8.66, 1.59 Hz), 7.26 (1H, d, J=1.59Hz), 7.14 (1H, brs), 7.07 (1H, d, J=8.66 Hz), 2.02 (3H, s); LRMS (ESI)m/z 148 [M+H]⁺.

Example 154(2)4-{5-Amino-3-(trifluoromethyl)-1H-pyrazolo-1-yl}-3-methylbenzonitrile(154b)

Compound (154a) (0.300 g) and 4,4,4-trifluoro-3-oxobutanenitrile (0.419g) were dissolved in ethanol (6.8 mL) and methanesulfonic acid (0.68mL), followed by reflux for 12 hr. The reaction solution was distributedbetween ethyl acetate and water, and the organic layer was washed withsaturated saline. The organic layer after the washing was dried overanhydrous sodium sulfate, and the solvent was distilled away. Theresidue was purified by neutral silica gel column chromatography(hexane/ethyl acetate) to obtain compound (154b) (0.255 g, 47%).

¹H-NMR (DMSO-d₆) δ: 7.95 (1H, s), 7.82 (1H, d, J=8.05 Hz), 7.53 (1H, d,J=8.05 Hz), 5.74 (1H, s), 5.69 (2H, s), 2.10 (3H, s); LRMS (ESI) m/z 267[M+H]⁺.

Example 154(3)4-{5-((2,2-Dimethyl-4,6-dioxo-1,3-dioxan-5-ylidene)methylamino)-3-(trifluoromethyl)-1H-pyrazolo-1-yl}-3-methylbenzonitrile(154c)

Compound (154b) (0.153 g) and 5-methoxymethylene Meldrum's acid (0.129g) were dissolved in 2-propanol (2.00 mL), followed by stirring at 100°C. for 1 hr. The reaction solution was cooled to room temperature, andthe precipitate was collected by filtration, washed with diethyl ether,and dried under reduced pressure to obtain compound (154c) (0.159 mg,66%).

¹H-NMR (DMSO-d₆) δ: 11.07 (1H, d, J=7.56 Hz), 8.46 (1H, d, J=7.56 Hz),8.04 (1H, d, J=1.71 Hz), 7.91 (1H, dd, J=8.05, 1.71 Hz), 7.76 (1H, d,J=8.05 Hz), 7.39 (1H, s), 2.17 (3H, s), 1.62 (6H, s); LRMS (ESI) m/z 420[M+H]⁺.

Example 154(4)3-Methyl-4-{4-oxo-3-(trifluoromethyl)-4,7-dihydro-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(154d)

Compound (154c) (2.9 g) was added to Dothem (21.0 mL), followed bystirring at 200° C. for 1 hr. The reaction solution was cooled to roomtemperature, and the precipitate was collected by filtration, washedwith hexane, and dried under reduced pressure to obtain compound (154d)(2.20 g, 97%).

¹H-NMR (DMSO-d₆) δ: 8.32 (1H, brs), 8.02 (1H, d, J=1.46 Hz), 7.89 (1H,dd, J=8.29, 1.46 Hz), 7.74 (1H, d, J=8.29 Hz), 6.78 (1H, brs), 2.15 (3H,s); LRMS (ESI) m/z 319 [M+H]⁺.

Example 154(5)4-{4-Chloro-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-methylbenzonitrile(154e)

Compound (154d) (2.20 g) was dissolved in chloroform (14 mL), andthionyl chloride (1.00 mL) and DMF (0.148 mL) were added to theresulting solution, followed by reflux for 3 hr. Water was added to thereaction solution for distribution. The organic layer was washed withsaturated sodium bicarbonate water. The organic layer after the washingwas dried over anhydrous sodium sulfate, and the solvent was distilledaway. 2-Propanol was added to the residue, and the precipitate wascollected by filtration and then dried under reduced pressure to obtaincompound (154e) (1.60 g, 71%).

¹H-NMR (DMSO-d₆) δ: 8.69 (1H, d, J=5.12 Hz), 8.07 (1H, d, J=1.34 Hz),7.95 (1H, dd, J=8.05, 1.34 Hz), 7.81 (1H, d, J=8.05 Hz), 7.77 (1H, d,J=4.88 Hz), 2.18 (3H, s); LRMS (ESI) m/z 337 [M+H]⁺.

Example 154(6)3-Methyl-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(154)

Compound (154e) (1.66 g), copper(I) oxide (0.070 g),4,7-dimethoxy-1,10-phenanthroline (0.214 g), cesium carbonate (5.46 g),polyethylene glycol (Mn=3400) (0.250 g), and4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazole hydrochloride (1.20 g) weresuspended in DMSO (15 mL), followed by stirring at 120° C. for 2 hr. Thereaction solution was diluted with ethyl acetate, and insoluble matterswere filtered by celite. The filtrate was distributed between ethylacetate and water, and the organic layer was washed with saturatedsaline. The organic layer after the washing was dried over anhydroussodium sulfate, and the solvent was distilled away to obtain3-methyl-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile,which was used in the subsequent reaction without being purified. TFA(5.0 mL) and sulfuric acid (0.5 mL) were added to this3-methyl-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile,followed by stirring at room temperature for 2 days. The reactionsolution was cooled in an ice bath and was neutralized with sodiumhydroxide. The reaction solution was distributed between ethyl acetateand water, and the organic layer was washed with saturated saline. Theorganic layer after the washing was dried over anhydrous sodium sulfate,and the solvent was distilled away. Ethanol was added to the residue,and the precipitate was collected by filtration and dried under reducedpressure to obtain compound (154) (0.881 g, the second stage yield:38%).

¹H-NMR (DMSO-d₆) δ: 9.57 (1H, d, J=4.88 Hz), 8.87 (1H, brs), 8.81 (1H,s), 8.75 (1H, d, J=1.46 Hz), 8.69 (1H, s), 8.64 (1H, dd, J=8.17, 1.46Hz), 8.50 (1H, s), 8.44 (1H, s), 8.39 (1H, d, J=4.88 Hz), 8.36 (1H, d,J=8.17 Hz), 8.28 (1H, brs), 4.59 (3H, s), 2.88 (3H, s); LRMS (ESI) m/z466 [M+H]⁺.

Example 1553-Ethyl-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(155) Example 155(1) 3-Ethyl-4-hydrazinylbenzonitrile (155a)

According to Example 154(1), compound (155a) (0.370 g, 28%) was preparedusing 3-ethyl-4-fluorobenzonitrile (1.22 g) instead of4-fluoro-3-methylbenzonitrile.

Example 155(2)4-{5-Amino-3-(trifluoromethyl)-1H-pyrazolo-1-yl}-3-ethylbenzonitrile(155b)

According to Example 154(2), compound (155b) (0.220 g, 33%) was preparedusing compound (155a) (0.370 g) instead of compound (154a).

¹H-NMR (CDCl₃) δ: 7.72 (1H, d, J=1.95 Hz), 7.64 (1H, dd, J=8.05, 1.95Hz), 7.46 (1H, d, J=8.05 Hz), 5.88 (1H, s), 3.72 (2H, s), 2.56 (2H, q,J=7.56 Hz), 1.15 (3H, t, J=7.56 Hz); LRMS (ESI) m/z 281 [M+H]⁺.

Example 155(3)4-{5-((2,2-Dimethyl-4,6-dioxo-1,3-dioxan-5-ylidene)methylamino)-3-(trifluoromethyl)-1H-pyrazolo-1-yl}-3-ethylbenzonitrile(155c)

According to Example 154(3), compound (155c) (0.286 g, 84%) was preparedusing compound (155b) (0.220 g) instead of compound (154b).

Example 155(4)3-Ethyl-4-{4-oxo-3-(trifluoromethyl)-4,7-dihydro-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(155d)

According to Example 154(4), compound (155d) (0.148 g, 68%) was preparedusing compound (155c) (0.286 g) instead of compound (154c).

¹H-NMR (CDCl₃) δ: 8.36 (1H, brs), 7.74 (1H, d, J=1.71 Hz), 7.65 (1H, dd,J=8.05, 1.71 Hz), 7.59 (2H, d, J=8.05 Hz), 6.71 (1H, brs), 2.57 (2H, q,J=7.56 Hz), 1.12 (3H, t, J=7.56 Hz); LRMS (ESI) m/z 333 [M+H]⁺.

Example 155(5)4-{4-Chloro-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-methylbenzonitrile(155e)

According to Example 154(5), compound (155e) (0.064 g, 41%) was preparedusing compound (155d) (0.148 g) instead of compound (154d).

¹H-NMR (CDCl₃) δ: 8.52 (1H, d, J=4.88 Hz), 7.78 (1H, d, J=1.95 Hz), 7.70(1H, dd, J=8.05, 1.95 Hz), 7.57 (1H, d, J=8.05 Hz), 7.43 (1H, d, J=4.88Hz), 2.56 (2H, q, J=7.56 Hz), 1.12 (3H, t, J=7.56 Hz); LRMS (ESI) m/z351 [M+H]⁺.

Example 155(6)3-Methyl-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(155)

According to Example 154(6), compound (155) (0.008 g, 9%) was preparedusing compound (155e) (0.064 g) instead of compound (154e).

¹H-NMR (DMSO-d₆) δ: 9.56 (1H, d, J=4.88 Hz), 8.90 (1H, brs), 8.81 (1H,s), 8.77 (1H, d, J=1.95 Hz), 8.69 (1H, s), 8.65 (1H, dd, J=8.05, 1.95Hz), 8.51 (1H, s), 8.44 (1H, s), 8.39 (1H, d, J=4.88 Hz), 8.34 (1H, d,J=8.05 Hz), 8.30 (1H, brs), 4.59 (3H, s), 3.15 (2H, q, J=7.44 Hz), 1.76(3H, t, J=7.44 Hz); LRMS (ESI) m/z 481 [M+H]⁺.

Example 1564-{4-(4-(1-Methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-propylbenzamide(156) Example 156(1)4-{5-Amino-3-(trifluoromethyl)-1H-pyrazolo-1-yl}-3-ethylbenzonitrile(156a)

According to Example 154(1), 4-hydrazinyl-3-propylbenzonitrile wasprepared using 4-fluoro-3-propylbenzonitrile (1.00 g) instead of4-fluoro-3-methylbenzonitrile; and according to Example 154(2), compound(156a) (0.340 g, the second stage yield: 19%) was prepared using4-hydrazinyl-3-propylbenzonitrile instead of compound (154a).

¹H-NMR (CDCl₃) δ: 7.70 (1H, d, J=1.95 Hz), 7.64 (1H, dd, J=8.05, 1.95Hz), 7.46 (1H, d, J=8.05 Hz), 5.88 (1H, s), 3.71 (2H, s), 2.51 (2H, t,J=7.81 Hz), 1.53 (2H, dtt, J=7.32, 7.32, 7.81 Hz), 0.87 (3H, t, J=7.32Hz); LRMS (ESI) m/z 295 [M+H]⁺.

Example 156(2)4-{5-((2,2-Dimethyl-4,6-dioxo-1,3-dioxan-5-ylidene)methylamino)-3-(trifluoromethyl)-1H-pyrazolo-1-yl}-3-propylbenzonitrile(156b)

According to Example 154(3), compound (156b) (0.482 g, 93%) was preparedusing compound (156a) (0.340 g) instead of compound (154b).

¹H-NMR (CDCl₃) δ: 11.20 (1H, d, J=13.17 Hz), 8.38 (1H, d, J=13.17 Hz),7.78 (1H, d, J=1.71 Hz), 7.73 (1H, dd, J=8.05, 1.71 Hz), 7.45 (1H, d,J=8.05 Hz), 6.63 (1H, s), 2.43 (2H, t, J=7.68 Hz), 1.53 (2H, dtt,J=7.32, 7.32, 7.68 Hz), 0.85 (3H, t, J=7.32 Hz); LRMS (ESI) m/z 449[M+H]⁺.

Example 156(3)4-{4-Oxo-3-(trifluoromethyl)-4,7-dihydro-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-propylbenzonitrile(156c)

According to Example 154(4), compound (156c) (0.300 g, 81%) was preparedusing compound (156b) (0.482 g) instead of compound (154c).

¹H-NMR (CDCl₃) δ: 8.40 (1H, brs), 7.73 (1H, d, J=1.71 Hz), 7.67 (1H, dd,J=8.05, 1.71 Hz), 7.60 (1H, d, J=8.05 Hz), 6.75 (1H, brs), 2.52 (2H, t,J=7.81 Hz), 1.49 (2H, dtt, J=7.32, 7.32, 7.81 Hz), 0.81 (3H, t, J=7.32Hz); LRMS (ESI) m/z 347 [M+H]⁺.

Example 156(4)4-{4-Chloro-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-propylbenzonitrile(156d)

According to Example 154(5), compound (156d) (0.250 g, 79%) was preparedusing compound (156c) (0.300 g) instead of compound (154d).

¹H-NMR (CDCl₃) δ: 8.52 (1H, d, J=4.88 Hz), 7.76 (1H, d, J=1.83 Hz), 7.69(1H, dd, J=8.05, 1.83 Hz), 7.57 (1H, d, J=8.05 Hz), 7.43 (1H, d, J=4.88Hz), 2.50 (2H, t, J=7.68 Hz), 1.50 (2H, dtt, J=7.32, 7.32, 7.68 Hz),0.80 (3H, t, J=7.32 Hz); LRMS (ESI) m/z 365 [M+H]⁺.

Example 156(5)3-Methyl-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(156)

According to Example 154(6), compound (156) (0.0.97 g, 34%) was preparedusing compound (156d) (0.250 g) instead of compound (154e).

¹H-NMR (DMSO-d₆) δ: 8.84 (1H, d, J=4.88 Hz), 8.16 (1H, s), 8.09 (1H,brs), 8.03 (1H, d, J=1.95 Hz), 7.97 (1H, s), 7.92 (1H, dd, J=8.05, 1.95Hz), 7.78 (1H, s), 7.71 (1H, s), 7.66 (1H, d, J=4.88 Hz), 7.62 (1H, d,J=8.05 Hz), 7.56 (1H, brs), 3.87 (3H, s), 2.41 (2H, t, J=7.68 Hz), 1.44(2H, ttd, J=7.68, 7.32, 7.32 Hz), 0.71 (3H, t, J=7.32 Hz); LRMS (ESI)m/z 495 [M+H]⁺.

Example 1572-Amino-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(157) Example 157(1)2-Amino-4-{4-iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(157a)

According to Example 106(1), compound (157a) (2.47 g, the second stageyield: 58%) was prepared using compound (153a) (3.00 g) instead ofcompound (6b).

¹H-NMR (DMSO-d₆) δ: 8.40 (1H, d, J=4.88 Hz), 8.14 (1H, d, J=4.88 Hz),7.86 (1H, brs), 7.76 (1H, d, J=8.78 Hz), 7.50 (1H, d, J=2.20 Hz), 7.32(1H, dd, J=8.78, 2.20 Hz), 7.20 (1H, brs), 6.98 (2H, s); LRMS (ESI) m/z448 [M+H]⁺.

Example 157(2)2-Amino-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(157)

According to Example 99(2), compound (157) (46%) was prepared usingcompound (157a) instead of compound (99a).

¹H-NMR (DMSO-d₆) δ: 8.96 (1H, d, J=4.88 Hz), 8.22 (1H, s), 7.99 (1H, s),7.88 (1H, brs), 7.81 (1H, s), 7.78 (1H, d, J=8.78 Hz), 7.73 (1H, s),7.71 (1H, d, J=4.88 Hz), 7.55 (1H, d, J=1.95 Hz), 7.38 (1H, dd, J=8.78,1.95 Hz), 7.23 (1H, brs), 3.87 (3H, s); LRMS (ESI) m/z 468 [M+H]⁺.

Example 1583-Amino-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(158) Example 158(1)3-Amino-4-{4-iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(158a)

Compound (153a) (5.00 g), cesium carbonate (6.72 g), and4-chloro-3-nitrobenzonitrile (3.21 g) were suspended in acetonitrile (50mL), followed by stirring at 70° C. for 4 hr. A saturated aqueousammonium chloride solution was added to the reaction solution, and theprecipitate was collected by filtration and dried under reduced pressureto obtain4-{4-iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-nitrobenzonitrile(7.19 g, 98%). The obtained4-{4-iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-nitrobenzonitrile(7.19 g) was suspended in THF (50 mL), MeOH (50 mL), and water (50 mL),and ammonium chloride (7.20 g) and iron powder (8.76 g) were added tothe resulting suspension, followed by stirring at 80° C. for 2 hr. Thereaction solution was diluted with ethyl acetate, and insoluble matterswere filtered by celite. The solvent of the filtrate was distilled away,and water was added to the residue. Insoluble matters were collected byfiltration and dried under reduced pressure to obtain compound (158a)(6.44 g, 96%).

¹H-NMR (DMSO-d₆) δ: 8.26 (1H, d, J=4.63 Hz), 8.08 (1H, d, J=4.63 Hz),7.42 (1H, d, J=8.05 Hz), 7.23 (1H, s), 7.04 (1H, d, J=8.05 Hz), 5.80(2H, s); LRMS (ESI) m/z 430 [M+H]⁺.

Example 158(2)3-Amino-4-{4-iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(158b)

Compound (158a) (0.100 g) was dissolved in DMSO (1.2 mL). A hydrogenperoxide solution (30 wt %) (0.053 mL) and a 4 mol % aqueous sodiumhydroxide solution (0.233 mL) were added to the resulting solution,followed by stirring at room temperature for 20 min. Water was added tothe reaction solution, and the precipitate was collected by filtrationand was dried under reduced pressure to obtain compound (158b) (0.090g).

¹H-NMR (DMSO-d₆) δ: 8.25 (1H, d, J=4.63 Hz), 8.06 (1H, d, J=4.63 Hz),7.94 (1H, brs), 7.38 (1H, s), 7.36 (1H, brs), 7.24 (1H, d, J=8.05 Hz),7.11 (1H, d, J=8.05 Hz), 5.40 (2H, s); LRMS (ESI) m/z 448 [M+H]⁺.

Example 158(3)3-Amino-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(158)

According to Example 99(2), compound (155) (0.040 g, 36%) was preparedusing compound (158b) (0.090 g) instead of compound (99a).

¹H-NMR (DMSO-d₆) δ: 9.52 (1H, d, J=4.88 Hz), 8.73 (1H, s), 8.70 (1H, s),8.67 (1H, brs), 8.45 (2H, s), 8.33 (1H, d, J=4.88 Hz), 8.12 (1H, d,J=1.71 Hz), 8.09 (1H, brs), 8.02 (1H, d, J=8.05 Hz), 7.86 (1H, dd,J=8.05, 1.71 Hz), 6.13 (2H, s), 4.59 (3H, s); LRMS (ESI) m/z 468 [M+H]⁺.

Example 1593-(Dimethylamino)-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(159)

Compound (158a) (0.100 g) and iodomethane (0.18 mL) were dissolved inDMF (6.0 mL), and sodium hydride (0.038 g, a 55% dispersion in paraffinliquid) was added to the resulting solution under ice cooling, followedby stirring for 1 hr. The reaction solution was distributed betweenethyl acetate and water, and the organic layer was washed with saturatedsaline. The organic layer after the washing was dried over anhydroussodium sulfate, and then the solvent was distilled away to obtain3-(dimethylamino)-4-{4-iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile,which was used in the subsequent reaction without being purified. This3-(dimethylamino)-4-{4-iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrilewas dissolved in DMSO (3.0 mL), and a hydrogen peroxide solution (30 wt%) (0.060 mL) and a 4 mol % aqueous sodium hydroxide solution (0.15 mL)were added to the resulting solution, followed by stirring at roomtemperature for 20 min. Water was added to the reaction solution, andthe precipitate was collected by filtration and dried under reducedpressure to obtain3-(dimethylamino)-4-{4-iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide.Lastly, according to Example 99(2), compound (159) (0.025 g, the thirdstage yield: 17%) was prepared using3-(dimethylamino)-4-{4-iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamideinstead of compound (99a).

¹H-NMR (DMSO-d₆) δ: 8.83 (1H, d, J=4.88 Hz), 8.14 (1H, brs), 8.08 (1H,s), 7.96 (1H, s), 7.77 (1H, s), 7.71 (1H, s), 7.66 (1H, d, J=1.71 Hz),7.63 (1H, d, J=4.88 Hz), 7.52 (1H, dd, J=8.05, 1.71 Hz), 7.52 (1H, brs),7.45 (1H, d, J=8.05 Hz), 3.87 (3H, s), 2.43 (6H, s); LRMS (ESI) m/z 496[M+H]⁺.

Example 1602-(Isopropylamino)-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(160)

Compound (157a) (0.200 g), sodium triacetoxyborohydride (0.189 g), andisopropenyl methyl ether (0.102 mL) were dissolved in dichloroethane(2.0 mL) and acetic acid (0.50 mL), followed by stirring at 0° C. for 1hr. The reaction solution was distributed between ethyl acetate andsaturated sodium bicarbonate water, and the organic layer was washedwith saturated saline and was dried over anhydrous sodium sulfate. Thesolvent was distilled away to obtain4-{4-iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(isopropyl)benzamide,which was used in the subsequent reaction without being purified.According to Example 99(2), compound (160) (the second stage yield: 30%)was prepared as a white solid using4-{4-iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-2-(isopropyl)benzamideinstead of compound (99a).

¹H-NMR (DMSO-d₆) δ: 8.94 (1H, d, J=4.88 Hz), 8.38 (1H, d, J=7.07 Hz),8.04 (1H, s), 7.96 (1H, s), 7.84 (1H, d, J=8.78 Hz), 7.74 (1H, s), 7.71(1H, s), 7.67 (1H, d, J=4.88 Hz), 7.54 (1H, d, J=1.95 Hz), 7.26 (1H, dd,J=8.78, 1.95 Hz), 3.86 (3H, s), 3.68 (1H, dtt, J=7.07, 6.34, 6.34 Hz),1.24 (6H, d, J=6.34 Hz); LRMS (ESI) m/z 510 [M+H]⁺.

Example 1612-(Ethylamino)-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(161)

According to Example 160, compound (161) (the second stage yield: 27%)was prepared as a white solid using acetaldehyde dimethyl acetal insteadof isopropenyl methyl ether.

¹H-NMR (DMSO-d₆) δ: 8.94 (1H, d, J=4.88 Hz), 8.33 (1H, t, J=5.00 Hz),8.04 (1H, s), 7.96 (1H, s), 7.85 (1H, d, J=8.54 Hz), 7.74 (1H, s), 7.71(1H, s), 7.67 (1H, d, J=4.88 Hz), 7.49 (1H, d, J=1.95 Hz), 7.32 (1H, dd,J=8.54, 1.95 Hz), 3.86 (3H, s), 3.21 (2H, dq, J=5.00, 7.20 Hz), 1.25(3H, t, J=7.20 Hz); LRMS (ESI) m/z 496 [M+H]⁺.

Example 1623-(Ethylamino)-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(162) Example 162(1)3-(Ethylamino)-4-{4-iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(162a)

Compound (158a) (1.50 g) and iodoethane (2.8 mL) were dissolved in DMF(35 mL), and sodium hydride (0.335 g, a 55% dispersion in paraffinliquid) was added to the resulting solution under ice cooling, followedby stirring for 20 min. Water was added to the reaction solution, andthe precipitate was collected by filtration and dried under reducedpressure to obtain3-(ethylamino)-4-{4-iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile,which was used in the subsequent reaction without being purified. This3-(ethylamino)-4-{4-iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrilewas dissolved in DMSO (15 mL), and a hydrogen peroxide solution (30 wt%) (0.563 mL) and a 4 mol % aqueous sodium hydroxide solution (2.48 mL)were added to the resulting solution, followed by stirring at roomtemperature for 20 min. Water was added to the reaction solution, andthe precipitate was collected by filtration and was dried under reducedpressure to obtain compound (162a) (1.29 g, the second stage yield: 78%)as a white solid.

¹H-NMR (DMSO-d₆) δ: 8.24 (1H, d, J=4.88 Hz), 8.06 (1H, d, J=4.88 Hz),8.03 (1H, brs), 7.41 (1H, brs), 7.28 (1H, d, J=1.71 Hz), 7.23 (1H, d,J=8.05 Hz), 7.14 (1H, dd, J=8.05, 1.71 Hz), 5.41 (1H, t, J=5.61 Hz),3.12 (2H, dq, J=5.61, 7.07 Hz), 1.05 (3H, t, J=7.07 Hz); LRMS (ESI) m/z476 [M+H]⁺.

Example 162(2)3-(Ethylamino)-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(162)

According to Example 99(2), compound (162) (0.435 g, 32%) was preparedusing (162a) (1.29 g) instead of compound (99a).

¹H-NMR (DMSO-d₆) δ: 9.52 (1H, d, J=4.88 Hz), 8.77 (1H, brs), 8.75 (1H,s), 8.70 (1H, s), 8.45 (2H, s), 8.34 (1H, d, J=4.88 Hz), 8.15 (1H, brs),8.04 (1H, d, J=1.46 Hz), 8.01 (1H, d, J=8.05 Hz), 7.90 (1H, dd, J=8.05,1.46 Hz), 6.09 (1H, t, J=5.61 Hz), 4.60 (3H, s), 3.87 (2H, dq, J=5.61,7.07 Hz), 1.79 (3H, t, J=7.07 Hz); LRMS (ESI) m/z 496 [M+H]⁺.

Example 1634-{4-(4-(1-Methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-(propylamino)benzamide(163) Example 163(1)4-{4-Iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-(propylamino)-benzamide(163a)

According to Example 120(1), compound (163a) (the second stage yield:66%) was prepared as a yellow solid using compound (158b) instead ofcompound (107a) and using propionaldehyde instead of acetone.

¹H-NMR (DMSO-d₆) δ: 8.24 (1H, d, J=4.63 Hz), 8.05 (1H, d, J=4.63 Hz),8.03 (1H, brs), 7.41 (1H, brs), 7.28 (1H, s), 7.24 (1H, d, J=8.05 Hz),7.13 (1H, d, J=8.05 Hz), 5.44 (1H, t, J=5.37 Hz), 3.04 (2H, td, J=7.32,5.37 Hz), 1.47 (2H, ttd, J=7.32, 7.32, 7.32 Hz), 0.83 (3H, t, J=7.32Hz); LRMS (ESI) m/z 490 [M+H]⁺.

Example 163(2)4-{4-(4-(1-Methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-(propylamino)benzamide(163)

According to Example 99(2), compound (163) (40%) was prepared using(163a) instead of compound (99a).

¹H-NMR (DMSO-d₆) δ: 9.23 (1H, d, J=1.46 Hz), 9.10 (2H, d, J=9.03 Hz),8.83 (1H, d, J=1.22 Hz), 8.76 (1H, d, J=7.56 Hz), 8.70 (1H, d, J=9.03Hz), 8.67 (1H, s), 8.44 (1H, s), 4.58 (5H, s), 3.83-3.74 (2H, m),2.26-2.20 (2H, m), 1.58 (3H, q, J=6.67 Hz); LRMS (ESI) m/z 510 [M+H]⁺.

Example 1643-(Isopropylamino)-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(164) Example 164(1)4-{4-Iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-(isopropylamino)benzamide(164a)

According to Example 120(1), compound (164a) (1.04 g, the second stageyield: 97%) was prepared using compound (158b) (1.00 g) instead ofcompound (107a).

¹H-NMR (DMSO-d₆) δ: 8.23 (1H, d, J=4.88 Hz), 8.04 (1H, d, J=4.88 Hz),8.01 (1H, brs), 7.39 (1H, brs), 7.32 (1H, s), 7.20 (1H, d, J=8.05 Hz),7.12 (1H, d, J=8.05 Hz), 5.07 (1H, d, J=8.05 Hz), 3.73 (1H, ttd, J=6.10,6.10, 8.05 Hz), 1.05 (6H, d, J=6.10 Hz); LRMS (ESI) m/z 490 [M+H]⁺.

Example 164(2)3-(Isopropylamino)-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(164)

According to Example 99(2), compound (164) (0.760 g, 71%) was preparedusing (164a) (1.04 g) instead of compound (99a).

¹H-NMR (DMSO-d₆) δ: 8.80 (1H, d, J=4.88 Hz), 8.05 (1H, brs), 8.03 (1H,s), 7.97 (1H, s), 7.73 (1H, s), 7.72 (1H, s), 7.62 (1H, d, J=4.88 Hz),7.43 (1H, brs), 7.37 (1H, d, J=1.71 Hz), 7.28 (1H, d, J=8.05 Hz), 7.18(1H, dd, J=8.05, 1.71 Hz), 5.03 (1H, d, J=8.05 Hz), 3.87 (3H, s), 3.08(1H, ttd, J=6.34, 6.34, 8.05 Hz), 1.09 (6H, d, J=6.34 Hz); LRMS (ESI)m/z 510 [M+H]⁺.

Example 1653-(Cyclobutylamino)-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(165) Example 165(1)3-(Cyclobutylamino)-4-{4-iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(165a)

According to Example 120(1), compound (165a) (1.02 g, the second stageyield: 71%) was prepared using compound (158b) (1.20 g) instead ofcompound (107a) and using cyclobutanone (0.430 mL) instead of acetone.

¹H-NMR (DMSO-d₆) δ: 8.24 (1H, d, J=4.88 Hz), 8.06 (1H, d, J=4.88 Hz),8.01 (1H, brs), 7.41 (1H, brs), 7.22 (1H, d, J=1.71 Hz), 7.21 (1H, d,J=8.05 Hz), 7.15 (1H, dd, J=8.05, 1.71 Hz), 5.63 (1H, d, J=6.83 Hz),3.98 (1H, dtt, J=6.83, 6.38, 6.38 Hz), 2.31-2.24 (2H, m), 1.84-1.74 (2H,m), 1.68-1.61 (2H, m); LRMS (ESI) m/z 502 [M+H]⁺.

Example 165(2)3-(Cyclobutylamino)-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(165)

According to Example 99(2), compound (165) (0.350 g, 39%) was preparedusing (165a) (0.870 g) instead of compound (99a).

¹H-NMR (DMSO-d₆) δ: 8.80 (1H, d, J=4.88 Hz), 8.03 (2H, s), 7.98 (1H, s),7.73 (2H, s), 7.62 (1H, d, J=4.88 Hz), 7.42 (1H, brs), 7.27 (1H, d,J=8.05 Hz), 7.25 (1H, d, J=1.83 Hz), 7.20 (1H, dd, J=8.05, 1.83 Hz),5.57 (1H, d, J=6.83 Hz), 4.00 (1H, ttd, J=7.07, 7.07, 6.83 Hz),2.33-2.27 (2H, m), 1.82-1.76 (2H, m), 1.68-1.65 (2H, m); LRMS (ESI) m/z522 [M+H]⁺.

Example 1663-(Cyclopentylamino)-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(166) Example 166(1)3-(Cyclopentylamino)-4-{4-iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(166a)

According to Example 120(1), compound (166a) (1.15 g, the second stageyield: 78%) was prepared using compound (158b) (1.20 g) instead ofcompound (107a) and using cyclopentanone (0.506 mL) instead of acetone.

¹H-NMR (DMSO-d₆) δ: 8.25 (1H, d, J=4.63 Hz), 8.06 (1H, d, J=4.63 Hz),8.02 (1H, brs), 7.42 (1H, brs), 7.35 (1H, d, J=1.59 Hz), 7.23 (1H, d,J=8.05 Hz), 7.15 (1H, dd, J=8.05, 1.59 Hz), 5.22 (1H, d, J=7.07 Hz),3.89 (1H, dtt, J=7.07, 6.22, 6.22 Hz), 1.94-1.86 (2H, m), 1.60-1.47 (4H,m), 1.41-1.35 (2H, m); LRMS (ESI) m/z 516 [M+H]⁺.

Example 166(2)3-(Cyclopentylamino)-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(166)

According to Example 99(2), compound (166) (0.630 g, 65%) was preparedusing (166a) (0.900 g) instead of compound (99a).

¹H-NMR (DMSO-d₆) δ: 8.80 (1H, d, J=4.63 Hz), 8.04 (1H, brs), 8.03 (1H,s), 7.97 (1H, s), 7.73 (1H, s), 7.72 (1H, s), 7.62 (1H, d, J=4.88 Hz),7.43 (1H, brs), 7.38 (1H, d, J=1.46 Hz), 7.31 (1H, d, J=8.05 Hz), 7.20(1H, dd, J=8.05, 1.46 Hz), 5.18 (1H, d, J=6.83 Hz), 3.87 (3H, s),3.10-3.05 (1H, m), 1.95-1.88 (2H, m), 1.60-1.49 (4H, m), 1.42-1.35 (2H,m); LRMS (ESI) m/z 536 [M+H]⁺.

Example 1673-(2,2-Difluoroethylamino)-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(167)

According to Example 120(1),3-(2,2-difluoroethylamino)-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile(the second stage yield: 95%) was prepared using compound (158a) insteadof compound (107a) and using 2,2-difluoroacetaldehyde ethyl hemiacetalinstead of acetone; and according to Example 99(2), compound (167) (8%)was prepared as a yellow solid using3-(2,2-difluoroethylamino)-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrileinstead of compound (99a).

¹H-NMR (DMSO-d₆) δ: 8.79 (1H, d, J=4.88 Hz), 8.08 (1H, brs), 8.02 (1H,s), 7.98 (1H, s), 7.72 (2H, s), 7.62 (1H, d, J=4.88 Hz), 7.48 (1Hbrs),7.46 (1H, d, J=1.71 Hz), 7.33 (1H, d, J=8.29 Hz), 7.26 (1H, dd, J=8.29,1.71 Hz), 5.70 (1H, t, J=6.34 Hz), 3.57 (1H, ddt, J=5.12, 4.63, 11.71Hz), 3.08 (2H, dt, J=11.71, 6.24 Hz); LRMS (ESI) m/z 532 [M+H]⁺.

Example 1683-(2-Methoxyethylamino)-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(168)

According to Example 120(1),3-(2-methoxyethylamino)-4-{4-iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamidewas prepared using compound (158b) (0.20 g) instead of compound (107a)and using 1,1,2-triethoxyethane (0.1170 mL) instead of acetone; andaccording to Example 99(2), compound (168) (0.030 g, the third stageyield: 12%) was prepared using3-(2-methoxyethylamino)-4-{4-iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(0.125 g) instead of compound (99a).

¹H-NMR (DMSO-d₆) δ: 8.81 (1H, dd, J=4.88, 0.73 Hz), 8.06 (1H, brs), 8.03(1H, s), 7.97 (1H, s), 7.73 (1H, s), 7.72 (1H, s), 7.63 (1H, dd, J=4.88,0.73 Hz), 7.44 (1H, brs), 7.37 (1H, d, J=1.22 Hz), 7.36 (1H, d, J=8.05Hz), 7.22 (1H, dd, J=8.05, 1.22 Hz), 5.45 (1H, t, J=5.37 Hz), 3.87 (3H,s), 3.42 (3H, t, J=5.73 Hz), 3.22 (3H, s); LRMS (ESI) m/z 526 [M+H]⁺.

Example 1693-Cyano-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(169)

According to Example 124(1),3-cyano-{4-iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridine}benzamide(the third stage yield: 6%) was prepared as a white solid using compound(153a) instead of compound (100a). According to Example 99, compound(169) (the second stage yield: 16%) was prepared using3-cyano-{4-iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridine}benzamideinstead of compound (99a).

¹H-NMR (DMSO-d₆) δ: 8.96 (1H, d, J=4.88 Hz), 8.62 (1H, d, J=1.95 Hz),8.45 (1H, dd, J=8.54, 1.95 Hz), 8.36 (1H, brs), 8.22 (1H, d, J=8.54 Hz),8.13 (1H, s), 7.99 (1H, s), 7.85 (1H, brs), 7.82 (1H, s), 7.77 (1H, d,J=4.88 Hz), 7.73 (1H, s), 3.89 (3H, s); LRMS (ESI) m/z 478 [M+H]⁺.

Example 1703-Bromo-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(170) Example 170(1)3-Bromo-4-{4-iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(170a)

According to Example 153(2), compound (170a) (1.53 g, the second stageyield: 55%) was prepared using 3-bromo-4-fluorobenzonitrile instead of3-chloro-4-fluorobenzonitrile.

¹H-NMR (DMSO-d₆) δ: 8.32 (1H, d, J=4.88 Hz), 8.28 (1H, br s), 8.22 (1H,d, J=1.71 Hz), 8.14 (1H, d, J=4.88 Hz), 8.06 (1H, dd, J=8.05, 1.71 Hz),7.91 (1H, d, J=8.05 Hz), 7.74 (1H, brs); LRMS (ESI) m/z 511 [M+H]⁺.

Example 170(2)3-Bromo-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(170)

According to Example 99(2), compound (170) (0.860 g, 54%) was preparedusing compound (170a) (1.53 g) instead of compound (99a).

¹H-NMR (DMSO-d₆) δ: 8.86 (1H, d, J=4.88 Hz), 8.39 (1H, d, J=1.71 Hz),8.30 (1H, brs), 8.12 (1H, dd, J=8.29, 1.95 Hz), 8.11 (1H, s), 7.97 (1H,s), 7.89 (1H, d, J=8.29 Hz), 7.79 (1H, s), 7.75 (1H, brs), 7.72 (1H, s),7.69 (1H, d, J=4.88 Hz), 3.87 (3H, s); LRMS (ESI) m/z 531 [M+H]⁺.

Example 1713-Fluoro-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(171) Example 171(1)3-Fluoro-4-{4-iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(171a)

According to Example 153(2), compound (171a) (0.747 g, the second stageyield: 55%) was prepared using 3,4-difluorobenzonitrile instead of3-chloro-4-fluorobenzonitrile.

¹H-NMR (DMSO-d₆) δ: 8.35 (1H, d, J=4.88 Hz), 8.25 (1H, brs), 8.16 (1H,d, J=4.88 Hz), 8.01 (1H, dd, J=10.86, 1.46 Hz), 7.95 (1H, td, J=8.29,1.46 Hz), 7.93 (1H, td, J=8.29, 6.83 Hz), 7.73 (1H, s); LRMS (ESI) m/z451 [M+H]⁺.

Example 171(2)3-Fluoro-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(171)

According to Example 99(2), compound (171) (0.430 g, 73%) was preparedusing compound (171a) (0.650 g) instead of compound (99a).

¹H-NMR (DMSO-d₆) δ: 9.62 (1H, d, J=4.88 Hz), 8.98 (1H, brs), 8.82 (1H,s), 8.76 (1H, dd, J=10.98, 1.46 Hz), 8.72-8.66 (3H, m), 8.51 (1H, d,J=0.73 Hz), 8.47 (1H, brs), 8.44 (1H, s), 8.43 (1H, d, J=4.88 Hz), 4.59(3H, s); LRMS (ESI) m/z 471 [M+H]⁺.

Example 1726-{4-(4-(1-Methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}biphenyl-3-carboxamide(172)

Compound (153) (0.030 g), phenylboronic acid (0.014 g), palladiumacetate (0.001 g), tricyclohexylphosphine (0.004 g), and potassiumphosphate (0.050 g) were dissolved in toluene (0.5 mL) and water (0.025mL), followed by stirring using microwaves at 130° C. for 10 min. Thereaction solution was distributed between chloroform and water, and theorganic layer was washed with saturated saline and then dried overanhydrous sodium sulfate. The solvent was distilled away, and theresidue was purified by neutral silica gel column chromatography(chloroform/methanol) to obtain compound (172) (0.002 g, 6%) as a whitesolid.

¹H-NMR (DMSO-d₆) δ: 8.70 (1H, dd, J=4.88, 0.98 Hz), 8.28 (1H, brs), 8.16(1H, s), 8.12 (1H, dd, J=8.05, 1.46 Hz), 8.00 (1H, s), 7.96 (1H, s),7.85 (1H, d, J=8.05 Hz), 7.71 (2H, s), 7.64 (1H, brs), 7.56 (1H, dd,J=4.88, 0.98 Hz), 7.22-7.19 (3H, m), 7.04-7.01 (2H, m), 3.86 (3H, s);LRMS (ESI) m/z 529 [M+H]⁺.

Example 1733-(Cyclopropyl)-4-{4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(173)

According to Example 172, compound (173) (7%) was prepared as a whitesolid using cyclohexylboronic acid instead of phenylboronic acid.

¹H-NMR (DMSO-d₆) δ: 8.83 (1H, d, J=4.88 Hz), 8.17 (1H, brs), 8.08 (1H,s), 7.96 (1H, s), 7.87 (1H, dd, J=8.29, 1.95 Hz), 7.77 (1H, s), 7.71(1H, s), 7.65 (1H, d, J=4.88 Hz), 7.64 (1H, d, J=1.95 Hz), 7.61 (1H, d,J=8.29 Hz), 7.54 (1H, brs), 3.87 (3H, s), 1.52-1.48 (1H, m), 0.75-0.71(4H, m); LRMS (ESI) m/z 493 [M+H]⁺.

Example 1744-{4-(4-(1-Methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-(prop-1-en-2-yl)benzamide(174)

According to Example 172, compound (174) (7%) was prepared as a whitesolid using propenylboronic acid and X-phos instead of phenylboronicacid and tricyclohexylphosphine, respectively.

¹H-NMR (DMSO-d₆) δ: 8.83 (1H, d, J=4.88 Hz), 8.22 (1H, s), 8.07 (1H, s),8.04 (1H, s), 8.02 (1H, dd, J=8.29, 1.95 Hz), 7.96 (1H, s), 7.77 (1H,s), 7.72 (1H, d, J=8.29 Hz), 7.71 (1H, s), 7.63 (1H, d, J=4.88 Hz), 7.60(1H, brs), 4.87 (1H, s), 4.55 (1H, s), 3.86 (3H, s), 1.80 (3H, s); LRMS(ESI) m/z 493 [M+H]⁺.

Example 1753-Methyl-4-{4-(4-(pyridin-3-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(175)

According to Example 154(6), compound (175) (the second stage yield: 5%)was prepared as a white solid using 4-(pyridin-3-yl)-1H-imidazoledihydrochloride instead of 4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazolehydrochloride.

¹H-NMR (DMSO-d₆) δ: 9.10 (1H, s), 8.91 (1H, d, J=4.88 Hz), 8.50 (1H, d,J=4.88 Hz), 8.35 (1H, s), 8.27 (1H, s), 8.22 (1H, dt, J=8.05, 1.89 Hz),8.16 (1H, brs), 8.04 (1H, s), 7.94 (1H, dd, J=8.29, 1.89 Hz), 7.76 (1H,d, J=4.88 Hz), 7.67 (1H, d, J=8.29 Hz), 7.57 (1H, brs), 7.48 (1H, dd,J=8.05, 4.88 Hz), 2.18 (3H, s); LRMS (ESI) m/z 464 [M+H]⁺.

Example 1762-Amino-4-{4-(4-(pyridin-3-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(176)

Compound (157a) (0.080 g) was dissolved in DMSO (1.2 mL), and potassiumcarbonate (0.160 g), copper(II) oxide (nanopowder) (0.009 g), and4-(pyridin-3-yl)-1H-imidazole hydrochloride (0.053 g) were added to theresulting solution, followed by stirring at 120° C. for 4 hr. Thereaction solution was diluted with ethyl acetate, and insoluble matterswere filtered by celite. The solvent was distilled away, and the residuewas purified by neutral silica gel column chromatography(chloroform/methanol) to obtain compound (176) (0.031 g, 30%).

¹H-NMR (DMSO-d₆) δ: 9.07 (1H, dd, J=1.95, 0.98 Hz), 8.99 (1H, dd,J=4.88, 0.98 Hz), 8.48 (1H, d, J=4.88 Hz), 8.30 (1H, s), 8.22 (1H, s),8.19 (1H, d, J=8.05 Hz), 7.88 (1H, brs), 7.79 (1H, d, J=8.78 Hz), 7.75(1H, dd, J=4.88, 0.98 Hz), 7.55 (1H, d, J=2.20 Hz), 7.45 (1H, dd,J=8.05, 4.88 Hz), 7.38 (1H, dd, J=8.78, 2.20 Hz), 7.22 (1H, brs), 7.00(2H, s); LRMS (ESI) m/z 465 [M+H]⁺.

Example 1773-Amino-4-{4-(4-(pyridin-3-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(177)

According to Example 176, compound (177) (45%) was prepared usingcompound (158b) instead of compound (157a).

¹H-NMR (DMSO-d₆) δ: 9.09 (1H, s), 8.85 (1H, dd, J=4.88, 0.98 Hz), 8.49(1H, d, J=4.39 Hz), 8.26 (1H, s), 8.21 (1H, d, J=7.81 Hz), 8.17 (1H, s),7.95 (1H, brs), 7.69 (1H, dd, J=4.88, 0.98 Hz), 7.46 (1H, dd, J=7.81,4.88 Hz), 7.40 (1H, d, J=1.22 Hz), 7.37 (1H, brs), 7.30 (1H, d, J=8.05Hz), 7.14 (1H, dd, J=8.05, 1.22 Hz), 5.42 (2H, s); LRMS (ESI) m/z 465[M+H]⁺.

Example 1782-(Ethylamino)-4-{4-(4-(pyridin-3-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(178)

According to Example 161, compound (178) (the second stage yield: 30%)was prepared as a white solid using 4-(4-(pyridin-3-yl)-1H-imidazolehydrochloride instead of 4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazolehydrochloride.

¹H-NMR (DMSO-d₆) δ: 9.07 (1H, d, J=1.95 Hz), 9.01 (1H, d, J=4.88 Hz),8.48 (1H, dd, J=4.88, 1.95 Hz), 8.35 (1H, t, J=4.88 Hz), 8.31 (1H, s),8.23 (1H, s), 8.21 (1H, d, J=7.56 Hz), 8.20 (1H, dt, J=8.05, 1.95 Hz),7.87 (1H, d, J=8.29 Hz), 7.77 (1H, d, J=4.88 Hz), 7.51 (1H, d, J=2.20Hz), 7.45 (1H, dd, J=8.05, 4.88 Hz), 7.34 (1H, dd, J=8.29, 2.07 Hz),3.23 (2H, dq, J=4.88, 7.07 Hz), 1.27 (3H, t, J=7.07 Hz); LRMS (ESI) m/z493 [M+H]⁺.

Example 1792-(Isopropylamino)-4-{4-(4-(pyridin-3-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(179)

According to Example 160, compound (179) (the second stage yield: 14%)was prepared as a white solid using 4-(4-(pyridin-3-yl)-1H-imidazolehydrochloride instead of 4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazolehydrochloride.

¹H-NMR (DMSO-d₆) δ: 9.07 (1H, d, J=1.95 Hz), 8.99 (1H, d, J=4.88 Hz),8.48 (1H, dd, J=4.88, 1.95 Hz), 8.38 (1H, d, J=7.32 Hz), 8.30 (1H, s),8.22 (1H, s), 8.20 (1H, dt, J=8.05, 1.95 Hz), 7.85 (1H, d, J=8.54 Hz),7.75 (1H, d, J=4.88 Hz), 7.54 (1H, d, J=2.20 Hz), 7.45 (1H, dd, J=8.05,4.88 Hz), 7.26 (1H, dd, J=8.54, 2.20 Hz), 3.69 (1H, dtt, J=7.32, 6.34,6.34 Hz), 1.24 (6H, d, J=6.34 Hz); LRMS (ESI) m/z 507 [M+H]⁺.

Example 1803-(Ethylamino)-4-{4-(4-(pyridin-3-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(180)

According to Example 176, compound (180) (36%) was prepared usingcompound (162a) instead of compound (157a).

¹H-NMR (DMSO-d₆) δ: 9.10 (1H, d, J=1.46 Hz), 8.84 (1H, d, J=4.88 Hz),8.49 (1H, dd, J=4.88, 1.46 Hz), 8.27 (1H, s), 8.22 (1H, dt, J=8.05, 1.95Hz), 8.19 (1H, s), 8.05 (1H, brs), 7.69 (1H, d, J=4.88 Hz), 7.46 (1H,dd, J=8.05, 4.88 Hz), 7.44 (1H, brs), 7.32 (1H, d, J=1.71 Hz), 7.29 (1H,d, J=8.05 Hz), 7.19 (1H, dd, J=8.05, 1.71 Hz), 5.38 (1H, t, J=5.49 Hz),3.15 (2H, dq, J=5.49, 7.07 Hz), 1.07 (3H, t, J=7.07 Hz); LRMS (ESI) m/z493 [M+H]⁺.

Example 1813-(Isopropylamino)-4-{4-(4-(pyridin-3-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(181)

According to Example 176, compound (181) (28%) was prepared usingcompound (164a) instead of compound (157a).

¹H-NMR (DMSO-d₆) δ: 9.09 (1H, d, J=1.46 Hz), 8.85 (1H, d, J=4.88 Hz),8.49 (1H, dd, J=4.88, 1.46 Hz), 8.28 (1H, s), 8.21 (1H, dt, J=7.81, 1.46Hz), 8.20 (1H, s), 8.05 (1H, brs), 7.70 (1H, d, J=4.88 Hz), 7.46 (1H,dd, J=7.814.88 Hz), 7.43 (1H, brs), 7.38 (1H, d, J=1.71 Hz) 7.29 (1H, d,J=8.05 Hz), 7.19 (1H, dd, J=8.05, 1.71 Hz), 5.04 (1H, d, J=8.05 Hz),3.78 (1H, ttd, J=6.34, 6.34, 8.05 Hz), 1.09 (7H, d, J=6.34 Hz); LRMS(ESI) m/z 507 [M+H]⁺.

Example 1823-(Cyclobutylamino)-4-{4-(4-(pyridin-3-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(182)

According to Example 176, compound (182) (49%) was prepared usingcompound (165a) instead of compound (157a).

¹H-NMR (DMSO-d₆) δ: 9.10 (1H, s), 8.85 (1H, d, J=4.88 Hz), 8.49 (1H, d,J=4.88 Hz), 8.27 (1H, s), 8.22 (1H, dt, J=7.81, 1.71 Hz), 8.19 (1H, s),8.03 (1H, brs), 7.70 (1H, d, J=4.88 Hz), 7.46 (1H, dd, J=7.81, 4.88 Hz),7.43 (1H, brs), 7.28 (1H, d, J=8.05 Hz), 7.26 (1H, d, J=1.46 Hz), 7.20(1H, dd, J=8.05, 1.46 Hz), 5.59 (1H, d, J=6.59 Hz), 4.01 (1H, ttd,J=7.32, 7.32, 6.59 Hz), 2.33-2.27 (2H, m), 1.85-1.76 (2H, m), 1.70-1.64(2H, m); LRMS (ESI) m/z 519 [M+H]⁺.

Example 1833-(Cyclopentylamino)-4-{4-(4-(pyridin-3-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(183)

According to Example 176, compound (183) (50%) was prepared usingcompound (168a) instead of compound (157a).

¹H-NMR (DMSO-d₆) δ: 9.09 (1H, d, J=1.71 Hz), 8.85 (1H, d, J=4.88 Hz),8.49 (1H, dd, J=4.63, 1.71 Hz), 8.27 (1H, s), 8.22 (1H, dt, J=7.81, 1.95Hz), 8.20 (1H, s), 8.05 (1H, brs), 7.70 (1H, d, J=4.88 Hz), 7.46 (1H,dd, J=7.81, 4.63 Hz), 7.43 (1H, brs), 7.39 (1H, d, J=1.71 Hz), 7.32 (1H,d, J=8.05 Hz), 7.20 (1H, dd, J=8.05, 1.71 Hz), 5.19 (1H, d, J=6.83 Hz),3.92 (1H, ttd, J=6.34, 6.34, 6.83 Hz), 1.95-1.89 (2H, m), 1.60-1.50 (4H,m), 1.43-1.35 (2H, m); LRMS (ESI) m/z 533 [M+H]⁺.

Example 1843-Amino-4-{4-(4-(1-ethyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(184)

According to Example 176, compound (184) (36%) was prepared usingcompound (158b) instead of compound (157a) and using4-(1-ethyl-1H-pyrazol-4-yl)-1H-imidazole hydrochloride instead of4-(pyridin-3-yl)-1H-imidazole hydrochloride.

¹H-NMR (DMSO-d₆) δ: 8.80 (1H, dd, J=4.76, 0.73 Hz), 8.02 (1H, s), 8.01(1H, s), 7.94 (1H, brs), 7.73 (1H, s), 7.72 (1H, s), 7.60 (1H, dd,J=4.76, 0.73 Hz), 7.39 (1H, d, J=1.22 Hz), 7.36 (1H, brs), 7.29 (1H, d,J=8.05 Hz), 7.14 (1H, dd, J=8.05, 1.22 Hz), 5.40 (2H, s), 4.16 (2H, q,J=7.16 Hz), 1.40 (3H, t, J=7.16 Hz); LRMS (ESI) m/z 482 [M+H]⁺.

Example 1854-{4-(4-(1-Ethyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-(ethylamino)benzamide(185)

According to Example 176, compound (185) (35%) was prepared usingcompound (162a) instead of compound (157a) and using4-(1-ethyl-1H-pyrazol-4-yl)-1H-imidazole hydrochloride instead of4-(pyridin-3-yl)-1H-imidazole hydrochloride.

¹H-NMR (DMSO-d₆) δ: 8.79 (1H, d, J=4.88 Hz), 8.05 (1H, brs), 8.02 (2H,s), 7.74 (1H, s), 7.72 (1H, s), 7.61 (1H, d, J=4.88 Hz), 7.42 (1H, brs),7.32 (1H, d, J=1.71 Hz), 7.28 (1H, d, J=8.05 Hz), 7.18 (1H, dd, J=8.05,1.71 Hz), 5.36 (1H, t, J=5.85 Hz), 4.16 (2H, q, J=7.24 Hz), 3.15 (2H,dq, J=7.07, 5.85 Hz), 1.40 (3H, t, J=7.24 Hz), 1.07 (3H, t, J=7.07 Hz);LRMS (ESI) m/z 510 [M+H]⁺.

Example 1863-Amino-4-{4-(4-(1-isopropyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(186)

According to Example 176, compound (186) (35%) was prepared usingcompound (158b) instead of compound (157a) and using4-(1-isopropyl-1H-pyrazol-4-yl)-1H-imidazole hydrochloride instead of4-(pyridin-3-yl)-1H-imidazole hydrochloride.

¹H-NMR (DMSO-d₆) δ: 8.80 (1H, dd, J=4.88, 0.98 Hz), 8.04 (1H, s), 8.00(1H, s), 7.94 (1H, brs), 7.73 (1H, s), 7.72 (1H, s), 7.60 (1H, dd,J=4.88, 0.98 Hz), 7.39 (1H, s), 7.36 (1H, brs), 7.29 (1H, d, J=8.05 Hz),7.13 (1H, d, J=8.05 Hz), 5.40 (2H, s), 4.53 (1H, tt, J=6.59, 6.59 Hz),1.45 (3H, d, J=6.59 Hz), 1.44 (3H, d, J=6.59 Hz); LRMS (ESI) m/z 496[M+H]⁺.

Example 1873-(Ethylamino)-4-{4-(4-(1-isopropyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(187)

According to Example 176, compound (187) (40%) was prepared usingcompound (162a) instead of compound (157a) and using4-(1-isopropyl-1H-pyrazol-4-yl)-1H-imidazole hydrochloride instead of4-(pyridin-3-yl)-1H-imidazole hydrochloride.

¹H-NMR (DMSO-d₆) δ: 8.79 (1H, d, J=4.88 Hz), 8.05 (1H, brs), 8.04 (1H,s), 8.02 (1H, s), 7.74 (1H, s), 7.73 (1H, s), 7.60 (1H, d, J=4.88 Hz),7.42 (1H, brs), 7.32 (1H, d, J=1.71 Hz), 7.29 (1H, d, J=8.05 Hz), 7.18(1H, dd, J=8.05, 1.71 Hz), 5.36 (1H, t, J=5.61 Hz), 4.53 (1H, tt,J=6.59, 6.59 Hz), 3.07 (2H, dq, J=5.61, 7.31 Hz), 1.45 (6H, d, J=6.59Hz), 1.17 (3H, t, J=7.32 Hz); LRMS (ESI) m/z 524 [M+H]⁺.

Example 1883-Chloro-4-{4-(4-(1-(hydroxymethyl)-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide(188)

Compound (153a) (0.200 g), cesium carbonate (0.880 g), and3-chloro-4-fluorobenzonitrile (0.154 g) were suspended in DMSO (50 mL),followed by stirring at 60° C. for 24 hr. The reaction solution wasdistributed between ethyl acetate and water, and the organic layer waswashed with saturated saline. The organic layer after the washing wasdried over anhydrous sodium sulfate, and then the solvent was distilledaway to obtain3-chloro-4-{4-iodo-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile,which was used in the subsequent reaction without being purified. This3-chloro-4-{4-chloro-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile,4-(1-(hydroxymethyl)-1H-pyrazol-4-yl)-1H-imidazole hydrochloride (0.129g), potassium carbonate (0.263 g), and copper(II) oxide (nanopowder)(0.020 g) were suspended in DMF (2.5 mL), followed by stirring at 120°C. for 24 hr. The reaction solution was diluted with ethyl acetate, andinsoluble matters were filtered by celite. The solvent of the filtratewas distilled away, and the residue was purified by neutral silica gelcolumn chromatography (chloroform/methanol) to obtain compound (188)(0.012 g, 3%).

¹H-NMR (DMSO-d₆) δ: 8.86 (1H, d, J=4.88 Hz), 8.30 (1H, brs), 8.25 (1H,d, J=1.71 Hz), 8.10 (1H, s), 8.08 (1H, dd, J=8.29, 1.71 Hz), 7.98 (1H,s), 7.92 (1H, d, J=8.29 Hz), 7.80 (1H, s), 7.76 (1H, brs), 7.74 (1H, s),7.69 (1H, d, J=4.88 Hz), 4.93 (1H, t, J=5.37 Hz), 4.17 (2H, t, J=5.49Hz), 3.75 (2H, q, J=5.53 Hz); LRMS (ESI) m/z 503 [M+H]⁺.

Example 1894-{4-(4-(1-Benzyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-chlorobenzamide(189)

According to Example 107(2), compound (189) (the second stage yield:15%) was prepared as a white solid using compound (99a) and4-(1-benzyl-1H-pyrazol-4-yl)-1H-imidazole hydrochloride instead ofcompound (107a) and 4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazolehydrochloride, respectively.

¹H-NMR (DMSO-d₆) δ: 8.66 (1H, d, J=4.95 Hz), 8.26 (1H, brs), 8.23 (1H,d, J=1.15 Hz), 8.21 (1H, d, J=1.81 Hz), 8.12 (1H, s), 8.04 (1H, dd,J=8.24, 1.81 Hz), 7.93 (1H, d, J=1.15 Hz), 7.81 (1H, s), 7.76 (1H, d,J=8.24 Hz), 7.70 (1H, brs), 7.42 (1H, d, J=4.78 Hz), 7.38-7.29 (5H, m),5.37 (2H, s), 3.24 (1H, tt, J=6.76, 6.76 Hz), 1.12 (6H, d, J=6.76 Hz).

Test Example 1 Measurement of HSP90-Binding Activity

First, a solution of purified HSP90 was prepared as follows. A plasmid,pET-HSP90N, expressing an HSP90 N-terminal protein having a His tag atthe N-terminal was constructed by inserting a human HSP90 alpha gene(NCBI Reference Sequences Register No. NM_(—)005348) region, whichencodes amino acids corresponding to from the 2nd amino acid to the236th amino acid of human HSP90 alpha protein (NCBI Reference SequencesRegister No. NP_(—)005339, full length: 732 amino acids), into pET-19b(Novagen Inc.). The pET-HSP90N was introduced into Escherichia colicells (BL21 (DE3), Stratagene Inc.), and then the Escherichia coli cellswere cultured in the presence of 0.5 mMisopropyl-beta-D-thiogalactopyranoside (Sigma-Aldrich Corp.) at 37° C.for 4 hr. The Escherichia coli cells were collected, suspended in alysis buffer (50 mM Tris-HCl (pH 7.5), 200 mM NaCl), and sonicated. Thesonicated cell solution was centrifugated (40000×g, 20 min) to obtainsupernatant as a crude extract. The extract was fractionated by NiSepharose High Performance (GE Healthcare Japan Corporation)chromatography and HiLoad 26/60 Superdex 75 pg (GE Healthcare JapanCorporation), and the fraction in which HSP90 protein was concentratedwas adjusted to a 50 mM Tris-HCl (pH 7.5)/20% glycerol solution as apurified HSP90 solution. The purified HSP90 solution was divided andstored at −80° C. until use.

The HSP90-binding activity was measured by an AlphaScreen competitiveassay system. The purified HSP90 solution was diluted with a bindingbuffer (50 mM Tris-HCl (pH 7.5), 150 mM NaCl, 0.1% Triton-X100, 1 mMDTT, 0.1% BSA) and added to a 384-well plate (No. 3673, CorningIncorporated) containing test substances. After reaction at roomtemperature for 2 hr, biotin-labeled geldanamycin was added to eachreaction solution in an amount of 40 nM, followed by reaction forfurther 1 hr. Detection mix (20 mM HEPES-KOH (pH 7.5), 0.5% BSA, 0.04mg/mL Nickel Chelate Acceptor beads, 0.04 mg/mL Streptavidin-coatedDonor beads) (No. 6760619C, Perkin Elmer, Inc.) was added to each wellin the same amount as that of the reaction solution. After reaction in adark place at room temperature for 1 hr, the fluorescence intensity ineach well was measured with a multilabel plate reader, EnVision (PerkinElmer, Inc.). The inhibition rate (%) of biotin-labeled geldanamycinbinding by a compound of the present invention was determined by thefollowing equation using the fluorescence signal of a testsubstance-free group (control) as a control. Each compound was addedthereto, and the concentration (IC₅₀ (μM)) of a compound to inhibit thebinding of biotin-labeled geldanamycin to 50% of that of the control wasdetermined as a relative index of HSP90 binding.Inhibition rate (%)=(C−T)/C×100

T: signal in a well to which a test substance was added

C: signal in a well to which no test substance was added

The results were that compounds of the present invention showed highlysatisfactory HSP90-binding activities whereas none of comparativecompounds showed HSP90-binding activity (Table 1).

Test Example 2 Measurement of Cell Growth Inhibition

Cell growth was measured by a crystal violet staining method. SK-BR-3cells (HTB-30) purchased from American Type Culture Collection wereseeded in a 96-well plate (No. 353075, BD Biosciences) at aconcentration of 5000 cells/well. The cells were cultured in a 5% CO₂incubator at 37° C. for 24 hr, and then test substances were added tothe plate, followed by culturing for further 72 hr. A 25% glutaraldehydesolution (No. 17025-25, Nacalai Tesque Inc.) was added to each well inan amount of 20 μL for 200 μL of the culture medium, and the plate wasleft to stand at room temperature for 20 min for fixing the cells. Theplate was washed with water and dried, and then 100 μL of a solution of0.05% crystal violet (No. 038-17792, Wako Pure Chemical Industries,Ltd.) in 20% methanol was added to each well. The plate was left tostand at room temperature for 20 min for staining the cells. The platewas washed with water and dried, and 100 μL of a solution mixture of0.05 M NaH₂PO₄ and ethanol (mixture in equal amounts) was added to eachwell. Absorbance at 540 nm was measured with a microplate reader(MTP-450, Corona Electric Co., Ltd.) as an index of the number of cellsin each well. The inhibition rate (%) of cell growth by a compound ofthe present invention was determined by the following equation using theabsorbance of a test substance-free group (control) as a control. Eachcompound was added thereto, and the concentration (IC₅₀ (μM)) of acompound to inhibit the number of cells to 50% of that of the controlwas determined.Inhibition rate (%)=(C−T)/C×100

T: absorbance in a well to which a test substance was added

C: absorbance in a well to which no test substance was added

The results were that compounds of the present invention inhibited thegrowth of breast cancer SK-BR-3 cells whereas none of comparativecompounds inhibited the growth of SK-BR-3 cells (Table 1 and 2).

TABLE 1 HSP-binding Cell growth activity inhibition Example IC₅₀ (μM)IC₅₀ (μM) 1 0.12 0.02 2 0.13 0.03 3 0.17 0.02 4 1.60 0.82 5 0.16 0.11 60.15 0.03 7 0.34 0.23 11 0.55 0.16 13 0.43 0.15 14 0.69 0.18 18 3.010.59 19 1.19 0.47 20 3.05 0.67 22 0.18 0.16 23 0.49 0.19 24 0.23 0.03 251.27 0.07 27 0.24 0.13 28 0.40 0.28 29 0.32 0.24 31 0.33 0.10 33 1.140.07 34 0.57 0.05 35 1.50 0.28 36 1.88 3.21 37 0.25 0.10 38 0.51 0.67 400.27 0.09 41 0.12 0.03 42 0.19 0.03 43 0.10 0.01 44 0.13 0.01 45 0.090.01 46 0.15 0.02 53 0.35 0.20 55 2.81 0.92 58 0.46 0.21 60 1.37 1.53 610.60 0.36 62 0.61 0.21 63 0.47 0.17 64 0.42 0.59 67 0.36 0.51 70 0.230.08 71 0.25 0.10 72 0.26 0.11 73 0.59 0.36 74 0.34 0.27 75 0.31 0.24 760.19 0.04 77 0.18 0.01 78 0.36 0.65 79 0.25 0.02 80 0.47 0.29 81 1.030.63 82 0.83 0.23 83 0.40 0.11 84 0.10 0.02 85 0.10 0.03 86 0.24 0.27 870.14 0.03 88 0.68 0.23 89 0.07 0.01 90 0.23 0.04 91 0.43 0.07 92 0.130.07 93 0.32 0.07 94 0.47 0.20 95 0.06 0.02 96 0.06 0.06 97 0.24 0.07 980.07 0.01 99 0.52 0.69 100 0.15 0.30 101 0.22 0.29 102 0.21 0.17 1030.12 0.17 104 0.12 0.20

TABLE 2 HSP-binding Cell growth activity inhibition Example IC₅₀ (μM)IC₅₀ (μM) 105 0.14 0.25 106 0.34 0.65 107 0.20 0.90 109 0.18 0.08 1100.31 0.49 111 0.19 0.08 112 0.25 0.04 113 0.26 0.07 114 0.49 0.18 1150.16 0.24 118 0.21 0.55 120 0.20 0.14 121 0.18 0.16 122 0.18 0.13 1230.19 0.12 124 0.35 0.59 126 0.23 1.13 127 0.23 1.56 128 0.09 0.15 1290.29 1.13 130 0.69 1.89 131 0.70 0.92 132 0.12 0.10 133 0.16 0.15 1340.20 0.11 135 0.40 0.69 136 0.13 0.27 137 0.28 0.43 138 0.19 0.53 1390.57 0.28 140 0.76 0.19 141 0.41 0.14 142 0.12 0.22 143 0.17 0.03 1440.42 0.11 145 0.63 1.50 146 0.77 0.21 147 0.81 0.36 148 0.40 0.24 1490.39 0.69 150 0.93 1.33 151 0.66 1.54 152 1.01 1.28 153 0.13 0.24 1540.14 0.12 155 0.11 0.04 156 0.07 0.04 157 0.13 0.19 158 0.10 0.20 1590.21 0.29 160 0.16 0.02 161 0.17 0.06 162 0.11 0.09 163 0.10 0.06 1640.11 0.07 165 0.12 0.07 166 0.14 0.11 167 0.10 0.08 168 0.07 0.06 1690.23 0.27 170 0.21 0.37 171 0.10 0.13 172 1.07 0.87 173 0.12 0.08 1740.32 0.38 175 0.37 0.29 176 0.42 0.41 177 0.27 0.39 178 0.53 0.08 1790.38 0.07 180 0.19 0.14 181 0.14 0.12 182 0.20 0.13 183 0.33 0.15 1840.23 0.41 185 0.19 0.21 186 0.80 1.93 187 0.62 0.71 Comparative >100 >10Example 1 Comparative >100 >10 Example 2 Comparative >10 >10 Example 3Comparative >10 >10 Example 4 Comparative >100 >10 Example 5Comparative >100 >10 Example 6

Comparative tests of the compounds of the present invention wereperformed by testing the binding of the compounds to HSP90 of thecompound of the present invention and testing the effect for inhibitionof growth of SKBR cancer cell line by the compounds, using the compoundsdescribed in Examples of Patent Document 2 as comparative compounds. Thecomparative compounds hardly exhibited inhibition activities in bothtests even at high concentrations. Note that the comparative compoundswere synthesized in accordance with the methods described in PatentDocument 2 (Table 3).

TABLE 3 Compound Structure Comparative Example 1

Comparative Example 2

Comparative Example 3

Comparative Example 4

Comparative Example 5

Comparative Example 6

The invention claimed is:
 1. A compound of formula (I)

or a salt thereof, wherein: X¹ is CH or N; any one of X², X³, and X⁴ isN, and the others are CH; any one or two of Y¹, Y², Y³, and Y⁴ is C—R⁴,and the others are each independently CH or N; R¹ is an optionallysubstituted monocyclic or bicyclic unsaturated heterocyclic groupcomprising 1 to 4 heteroatoms selected from the group consisting of N,S, and O; R² is a hydrogen atom, an optionally substituted alkyl groupcomprising 1 to 6 carbon atoms, or an optionally substituted alkenylgroup comprising 2 to 6 carbon atoms; R³ is a cyano group or —CO—R⁵;each R⁴ is independently a hydrogen atom, a halogen atom, a cyano group,an optionally substituted alkyl group comprising 1 to 6 carbon atoms, analkenyl group comprising 2 to 6 carbon atoms, an alkoxy group comprising1 to 6 carbon atoms, an aromatic hydrocarbon group, —N(R⁶)(R⁷), —S—R⁸,or —CO—R⁹; R⁵ is an amino group optionally comprising a hydroxyl group,or an optionally substituted mono- or di-alkylamino group; R⁶ and R⁷ areeach independently a hydrogen atom, an optionally substituted alkylgroup comprising 1 to 6 carbon atoms, a halogenoalkyl group comprising 1to 6 carbon atoms, an optionally substituted cycloalkyl group comprising3 to 7 carbon atoms, an optionally substituted aralkyl group, anoptionally substituted aromatic hydrocarbon group, an optionallysubstituted saturated heterocyclic group, or an optionally substitutedunsaturated heterocyclic group, or R⁶ and R⁷ form a saturatedheterocyclic group, together with the nitrogen atom to which they arebonded; R⁸ is an optionally substituted cycloalkyl group comprising 3 to7 carbon atoms or an optionally substituted aromatic hydrocarbon group;and R⁹ is a hydrogen atom, a hydroxyl group, an amino group optionallycomprising a hydroxyl group, or an optionally substituted mono- ordi-alkylamino group, wherein the optional substituents are selected fromthe group consisting of a halogen atom, a hydroxyl group, a cyano group,a nitro group, an alkyl group, a halogenoalkyl group, a cycloalkylgroup, a cycloalkyl-alkyl group, an aralkyl group, a hydroxyalkyl group,an alkenyl group, an alkenyl group, an alkoxy group, a halogenoalkoxygroup, an alkoxy-alkyl group, a cycloalkoxy group, a cycloalkyl-alkoxygroup, an aralkyloxy group, an aralkyloxy-alkyl group, an alkylthiogroup, a cycloalkyl-alkylthio group, an amino group, a monoalkylamino,dialkylamino group, a cycloalkyl-alkylamino group, an acyl group, anacyloxy group, an oxo group, a carboxyl group, an alkoxycarbonyl group,an aralkyloxycarbonyl group, a carbamoyl group, a saturated heterocyclicgroup, an unsaturated heterocyclic group, an aromatic hydrocarbon groupand a saturated heterocyclic oxy group; with the proviso that if R¹ issubstituted with the saturated or unsaturated heterocyclic group or thearomatic hydrocarbon group, the saturated or unsaturated heterocyclicgroup and the aromatic hydrocarbon group is optionally substituted witha substituent selected from the group consisting of a halogen atom, ahydroxyl group, a cyano group, a nitro group, an alkyl group, ahalogenoalkyl group, a cycloalkyl group, a cycloalkylalkyl group, anaralkyl group, a hydroxyalkyl group, an alkenyl group, an alkynyl group,an alkoxy group, a halogenoalkoxy group, an alkoxy-alkyl group, acycloalkoxy group, a cycloalkyl-alkoxy group, an aralkyloxy group, anaralkyloxy-alkyl group, an alkylthio group, a cycloalkyl-alkylthiogroup, an amino group, a monoalkylamino, dialkylamino group, acycloalkyl-alkylamino group, an acyl group, an acyloxy group, an oxogroup, a carboxyl group, an alkoxycarbonyl group, an aralkyloxycarbonylgroup, a carbamoyl group, a saturated heterocyclic group, an unsaturatedheterocyclic group, an aromatic hydrocarbon group and a saturatedheterocyclic oxy group.
 2. The compound or salt of claim 1, wherein R¹is an optionally substituted monocyclic 5- to 6-membered unsaturatedheterocyclic group comprising 1 to 3 heteroatoms selected from the groupconsisting of N, S, and O, or an optionally substituted bicyclic 9- to10-membered unsaturated heterocyclic group comprising 1 to 3 heteroatomsselected from the group consisting of N, S, and O.
 3. The compound orsalt of claim 1, wherein R² is an alkyl group comprising 1 to 6 carbonatoms optionally comprising a halogen atom, or an alkenyl groupcomprising 2 to 6 carbon atoms.
 4. The compound or salt of claim 1,wherein R³ is —CO—R⁵, and R⁵ is an amino group or a mono- or di-(C1-C6alkyl)amino group.
 5. The compound or salt of claim 1, wherein X² is N,and X³ and X⁴ are CH.
 6. The compound or salt of claim 1, wherein R¹ isselected from the group consisting of an optionally substituted1H-imidazol-1-yl group, an optionally substituted pyrazol-4-yl group, anoptionally substituted thiophen-3-yl group, an optionally substitutedfuran-2-yl group, an optionally substituted pyridin-3-yl group, anoptionally substituted pyridin-4-yl group, an optionally substitutedindol-5-yl group, an optionally substituted1H-pyrrolo[2,3-b]pyridin-5-yl group, an optionally substitutedbenzofuran-2-yl group, an optionally substituted quinolin-3-yl group,and an optionally substituted 5,6,7,8-tetrahydroquinolin-3-yl group. 7.The compound or salt of claim 1 wherein: Y¹ and Y³ are CH, any one ortwo of Y² and Y⁴ are C-R⁴, and the other is CH; and R⁴ is a halogenatom, an alkyl group comprising 1 to 6 carbon atoms optionallycomprising a mono- or di-(C1-C6 alkyl)amino group or a monocyclic 5- to7-membered saturated heterocyclic group comprising one or twoheteroatoms selected from the group consisting of N, S, and O, an alkoxygroup comprising 1 to 6 carbon atoms, —N(R⁶)(R⁷), —SR⁸, or —CO—R⁹. 8.The compound or salt of claim 1, wherein: R⁶ is a hydrogen atom or anoptionally substituted alkyl group comprising 1 to 6 carbon atoms, andR⁷ is a hydrogen atom, an optionally substituted alkyl group comprising1 to 6 carbon atoms, an optionally substituted cycloalkyl groupcomprising 3 to 7 carbon atoms, an optionally substituted aralkyl groupcomprising 7 to 12 carbon atoms, an optionally substituted aromatichydrocarbon group comprising 6 to 14 carbon atoms, a monocyclic orbicyclic optionally substituted saturated heterocyclic group comprising1 to 4 heteroatoms selected from the group consisting of N, S, and O, ora monocyclic or bicyclic optionally substituted unsaturated heterocyclicgroup comprising 1 to 4 heteroatoms selected from the group consistingof N, S, and O, or R⁶ and R⁷ form a 5- to 7-membered saturatedheterocyclic group, together with the nitrogen atom to which they arebonded; R⁸ is an optionally substituted cycloalkyl group comprising 3 to7 carbon atoms, or an optionally substituted aromatic hydrocarbon groupcomprising 6 to 14 carbon atoms; and R⁹ is a hydrogen atom, a hydroxylgroup, an amino group or a mono- or di-(C1-C6 alkyl)amino group.
 9. Apharmaceutical product comprising a compound or salt of claim
 1. 10. Apharmaceutical composition comprising a compound or salt of claim 1, anda pharmaceutically acceptable carrier.
 11. The compound or salt of claim1, which is selected from the group consisting of(2-(hydroxycyclohexylamino)-4-{3-isopropyl-4-(4-(4-methoxyphenyl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide);2-(4-Hydroxycyclohexylamino)-4-{3-methyl-4-(4-(pyridin-3-yl)-1H-imidazol-1-yl)-1H-pyrazolo[2,3-b]pyridin-1-yl}benzamide;4-{3-Isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}-3-methylbenzamide;3-Ethyl-4-{3-isopropyl-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide;3-(Ethylamino)-4-{4-(4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide;2-(Ethylamino)-4-{4-(4-(pyridin-3-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide;3-(Isopropylamino)-4-{4-(4-(pyridin-3-yl)-1H-imidazol-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide;and a salt thereof.
 12. A pharmaceutical composition comprising thecompound or salt of claim 11, and a pharmaceutically acceptable carrier.